APWH · Unit 2— c. 1200 — c. 1450 —

How the world connected.

Silk Roads, the Mongol Empire, Indian Ocean trade, trans-Saharan routes — and the cultural consequences of contact.

What you need to know

Three trade networks—Silk Roads overland, Indian Ocean by monsoon, Trans-Saharan by camel—knit together most of pre-Columbian Eurasia and Africa. The Mongol conquests (1206–1368) made the Silk Roads safer than ever. Goods, technologies, religions, and diseases all moved along the same routes. The Black Death (1347–1351) killed about a third of Europe via these very networks. Connectivity always carries cost.

CED topics (7)

The unit, topic by topic.

Deeper Context

Beyond the AP rubric: the era behind Unit 2

The 1200–1450 stretch in this unit lives inside a much wider story. For long-form context — themes, primary sources, and the moments that didn’t make the CED — read the era page(s):

  • 2.1

    The Silk Roads

    Overland trade across Eurasia: goods, ideas, technologies, diseases.ECN · CDI · GOV

    What to study

    The Silk Roads ran ~4,000 miles from Han China to the Mediterranean. Goods: silk, porcelain, paper from China; horses from Central Asia; spices from India; gold and silver. Caravanserai inns hosted merchants and pack camels every 25 miles. Mongol Pax Mongolica (c. 1250–1350) made the routes safer than ever. Technologies traveled west: the magnetic compass, gunpowder, movable type, paper-making. Religions traveled too: Buddhism from India to China, then to Korea and Japan. The Black Death rode the same rails to Europe.

    Key termsSilk Roads · Caravanserai · Pax Mongolica · Sogdians · Diasporic communities · Flying cash
    Exam focusCite specific goods AND specific technologies/ideas/diseases that traveled. Connect to economic integration AND demographic catastrophe.
    Primary sourceMarco Polo, Description of the World (on Silk Road trade), c. 1300 — Project Gutenberg
    Polo details the goods, currencies, and caravanserais linking China to the Mediterranean — a merchant’s-eye view of the Silk Roads at their peak.
    Whose story is missing?

    “I am a monk from the lands beyond the great ocean of the Far East. I was sent by the Great Khan and the Patriarch to visit the Pope of Rome and the kings of the Western countries.” — Rabban Bar Sauma, The History of Yahballaha III and Rabban Sauma, c. 1307 (translated from Syriac)

    Rabban Bar Sauma (c. 1225–1294) was a Nestorian Christian monk born near Beijing who traveled from China to Rome and Paris in 1287–1288, meeting the Pope and the kings of France and England. His account, written by his companion, documents the Silk Road not as a European trade route but as a world system connecting Christian, Muslim, Buddhist, and Mongol networks—where a Chinese Christian ambassador could be more connected than any European. Read the source →

  • 2.2

    The Mongol Empire and the Modern World

    Mongol conquest, integration, and legacy.GOV · CDI

    What to study

    Genghis Khan (r. 1206–1227) unified the steppe tribes and conquered from China to Persia. By Kublai Khan’s reign (Yuan dynasty, 1271–1368), the Mongols had built the largest contiguous empire in history. Their rule was ethnically stratified but religiously tolerant, and they maintained the Silk Roads with brutal efficiency. The Mongol invasions destroyed cities (Baghdad, 1258) but also connected Eurasia: Marco Polo’s journey, William of Rubruck’s embassies, and the spread of gunpowder and paper to Europe all happened under Pax Mongolica.

    Key termsGenghis Khan · Kublai Khan · Yuan dynasty · Pax Mongolica · Khanates · Marco Polo
    Exam focusThe Mongols did BOTH—destroyed and integrated. Cite specific cases of each. Don’t reduce them to “barbarian conquerors.”
    Primary sourceGiovanni de Plano Carpini, History of the Mongols, 1247 — Fordham Internet History Sourcebooks
    The first Western eyewitness account of the Mongol court — documents the military organization and administrative methods that enabled the largest contiguous empire in history.
    Whose story is missing?

    “In the cities of Khorasan, not one brick stands upon another. The people who could flee have fled; those who remained have been killed.” — Juvaini, History of the World Conqueror, 1260

    AP covers the Mongol Empire through its scale, administrative efficiency (Pax Mongolica), and facilitation of trade and cultural exchange. But for the populations of Baghdad, Kiev, and Nishapur, Mongol conquest was a demographic catastrophe: the destruction of Baghdad in 1258 killed somewhere between 200,000 and 800,000 people and ended the Abbasid Caliphate. Juvaini—a Persian historian who served the Mongols—documented destruction even as he acknowledged Mongol power. The world system the Mongols created was built on ruins. Read the source →

  • 2.3

    Exchange in the Indian Ocean

    Monsoon trade from East Africa to China.ECN · ENV · CDI

    What to study

    The Indian Ocean was the world’s largest premodern trade network, driven by predictable monsoon winds. Arab dhows, Chinese junks, and Indian craft moved spices, cotton, gold, ivory, slaves, and horses. Major hubs: Mogadishu, Kilwa, Aden, Hormuz, Calicut, Malacca, Quanzhou. Diasporic merchant communities (Muslim, Jewish, Hindu) lived in foreign ports. Zheng He’s Ming “treasure fleet” voyages (1405–1433) reached East Africa with hundreds of ships—then China abandoned the project for political reasons, leaving the Indian Ocean to the Portuguese after 1498.

    Key termsMonsoons · Dhows · Junks · Calicut · Malacca · Zheng He · Swahili coast
    Exam focusCompare with Silk Roads: maritime is cheaper for bulk goods. Use this to explain commodity differences.
    Primary sourceIbn Battuta, Account of the Indian Ocean Trade Network, 1340s — Project Gutenberg
    Ibn Battuta’s descriptions of Kilwa, Calicut, and the Malabar coast reveal the Indian Ocean’s multilingual, multi-religious trading communities and the goods that moved between them.
    Whose story is missing?

    “I arrived at the port of Calicut, one of the great ports of the world. It is visited by merchants from China, Java, Ceylon, the Maldives, Yemen, and Persia. People of every nation gather there, and there is such a multitude of ships that the eye cannot take them all in.” — Ibn Battuta, Rihla (A Gift to Those Who Contemplate the Wonders of Cities and the Marvels of Traveling), c. 1355

    Ibn Battuta (1304–1368/69) of Tangier traveled approximately 75,000 miles over 29 years—more than any documented traveler before the 19th century. His Rihla recorded the Indian Ocean as a self-sufficient world economy connecting East Africa, Arabia, India, and China without European involvement. This is the world his account reveals: not a pre-modern backwater awaiting European contact, but a thriving interconnected system operating on its own terms. Read the source →

  • 2.4

    Trans-Saharan Trade Routes

    Camel caravans linking West Africa to Mediterranean markets.ECN · CDI

    What to study

    Berber-led camel caravans crossed the Sahara from the 8th century. Going south: salt, copper, textiles, manufactured goods. Going north: gold (West African Mali was one of the world’s richest sources), ivory, and enslaved people. The camel saddle was the critical technology that made bulk transport viable. Caravans concentrated in the Sahel cities (Timbuktu, Gao, Djenné), which became centers of Islamic learning. Mansa Musa’s 1324 hajj displayed Mali’s gold wealth so spectacularly that Cairo’s gold prices took a decade to recover.

    Key termsTrans-Saharan · Camels · Mali · Timbuktu · Mansa Musa · Salt-gold trade
    Exam focusThe salt-gold “exchange” was nearly weight-for-weight at certain points. Cite the trade goods and the route.
    Primary sourceIbn Battuta, Account of Trans-Saharan Trade and Timbuktu, 1352 — Fordham Internet History Sourcebooks
    Ibn Battuta describes the gold-and-salt trade crossing the Sahara and the city of Timbuktu’s wealth — direct evidence of the trans-Saharan network’s scale and impact.
    Whose story is missing?

    “There was no official of the court, nor person in the city, who did not receive a gift of gold from the hand of Mansa Musa… His generosity was so great that the price of gold in Cairo fell and did not recover for twelve years.” — Al-Maqrizi, Kitab al-Suluk, c. 1441 (translated from Arabic)

    Al-Maqrizi (1364–1442) was an Egyptian historian who compiled the most detailed Arab account of Mansa Musa’s 1324 hajj. His account reveals how Mali’s wealth was read from outside—as spectacle and economic disruption—rather than from the perspective of the West African peoples who produced that gold through labor and trade. The gold came from somewhere; Al-Maqrizi’s focus was on where it went. Read the source →

  • 2.5

    Cultural Consequences of Connectivity

    Religions, technologies, and diseases moving across networks.CDI

    What to study

    Connectivity moved more than goods. Buddhism traveled from India to East Asia along the Silk Roads. Islam spread from Arabia to West Africa, India, and Southeast Asia along trade routes—often via Sufi mystics adapting to local cultures. Chinese inventions (gunpowder, paper, the compass) reached Europe by 1300. Hindu-Arabic numerals replaced Roman numerals in European mathematics. The Black Death (1347–1351) traveled the same network, killing ~75 million Eurasians. Connectivity has always come with biological cost.

    Key termsBuddhism spread · Islam spread · Sufism · Hindu-Arabic numerals · Black Death · Religious syncretism
    Exam focusBe SPECIFIC about which technology/religion/disease moved where. Generic claims about “exchange” lose points.
    Primary sourceBoccaccio, The Decameron (Preface on the Black Death), 1353 — Project Gutenberg
    Boccaccio’s Florentine account of the plague’s social destruction illustrates how disease, carried along trade routes, transformed European culture, religion, and labor.
    Whose story is missing?

    “We shall write it down now, in the beginning, because there is no longer the original book, no original painting, to shed light on a word like this, on the declaration that was made in the dawn of life.” — Anonymous K’iche’ Maya scribes, Popol Vuh, compiled c. 1554 (from pre-contact K’iche’ Maya oral tradition; translated by Dennis Tedlock, 1985)

    The Popol Vuh was recorded by K’iche’ Maya scribes shortly after Spanish conquest, from an oral tradition preserving Maya cosmology and history. The scribes explained they were writing it down because the original painted books had been destroyed. The cultural consequences of connectivity included not only the spread of new ideas—but the systematic destruction of the knowledge systems that connected communities to their own pasts. Read the source →

  • 2.6

    Environmental Consequences of Connectivity

    Crops, livestock, ecological transformation.ENV

    What to study

    Crops crossed networks: Champa rice spread from Vietnam to Song China, doubling agricultural output and enabling the population boom. Sugar cultivation moved from South Asia through Persian and Mediterranean Islam, setting up the Atlantic plantation system that came in Unit 4. Bananas moved from Southeast Asia to Africa. Citrus and cotton spread westward through Islamic agriculture. These weren’t neutral exchanges: domesticated crops reshaped land use, labor patterns, and demographic capacity.

    Key termsChampa rice · Sugar diffusion · Agricultural exchange · Bananas · Cotton
    Exam focusPre-Columbian agricultural exchange set up the post-Columbian one. Cite specific crops and their trajectories.
    Primary sourceIbn al-Wardī, Account of the Black Death in Syria, 1349 — Fordham Internet History Sourcebooks
    An Arab poet-historian documents the plague’s arrival in Syria via trade routes from Crimea — tracing the environmental consequence of Silk Road connectivity.
    Whose story is missing?

    “The plague has blocked the roads. The markets are empty. The dead are too many to count. I write this knowing I may not live to send it.” — Ibn al-Wardi, Risalah al-Naba’ ‘an al-Waba (Report of the Plague), 1349 (he died of plague shortly after)

    The Black Death is AP’s showcase environmental consequence of connectivity, but the epidemic killed comparable proportions in the Middle East and Central Asia as in Europe. Ibn al-Wardi wrote his Arabic-language plague account shortly before dying of the disease himself—one of thousands of non-European documents that capture the plague’s devastation from perspectives AP rarely centers. Environmental consequences of connectivity were borne most heavily by those with least power to avoid them: the urban poor, the elderly, communities along the trade routes that carried the disease. Read the source →

  • 2.7

    Comparison of Economic Exchange

    Comparing Silk Roads, Indian Ocean, Trans-Saharan.ECN · CDI

    What to study

    Trade networks differ in technology, geography, and dominant carriers, but share the function of integrating distant economies. Compare: maritime networks (Indian Ocean) carried bulk goods cheaply; overland networks (Silk Roads, Trans-Saharan) carried high-value goods. State sponsorship varied: Mongol-protected vs. Berber-private vs. monsoon-coordinated. Diasporic merchant communities are common to all three. Use specific commodities and routes to ground the comparison.

    Key termsComparison · Maritime vs. overland · Diaspora · State sponsorship
    Exam focusFor comparison FRQs, structure: similarity 1 + similarity 2 + difference 1 + difference 2 + WHY (cause).
    Primary sourcePegolotti, Merchant’s Handbook (on Silk Road travel conditions), c. 1340 — Fordham Internet History Sourcebooks
    A Florentine merchant’s guide lists the goods, dangers, and costs of the Silk Road under Mongol rule — ideal for comparing the different exchange networks of 1200–1450.
    Whose story is missing?

    “I am a griot. It is I, Djeli Mamoudou Kouyaté, son of Bintou Kouyaté and Djeli Kedian Kouyaté, master in the art of eloquence. Since time immemorial the Kouyatés have been in the service of the Keita princes of Mali; we are vessels of speech, we are the repositories which harbour secrets many centuries old.” — Djeli Mamoudou Kouyaté, griot of the Kouyaté lineage, in D.T. Niane, Sundiata: An Epic of Old Mali, 1960 (recorded from oral tradition)

    The griot tradition was the primary vehicle for historical memory, political legitimacy, and cultural continuity across the Mali and Songhai empires. Where Eurasian literate cultures used written records, West African political and economic networks used griots. Kouyaté’s words document a tradition that predated European contact and structured the Trans-Saharan trade networks that AP World History often reduces to commodities and caravans. Read the source →

Practice the skill — LEQ

Practice LEQ stem.

Evaluate the extent to which the Mongol conquests transformed Eurasian trade AND cultural exchange between 1200 and 1450.

Practice in the LEQ Lab

Connect to your study

Era page: see the Eras of World History hub for the period’s broader global context.

Practice: FRQ Lab · Practice MCQs · Unit 2 flashcards