Pacific coast in 1647 and consolidated its control over the Russian Far East in the 19th century. The Great Divergence took place as Western Europe greatly surpassed China in technology and per capita wealth. As the Age of Revolutions dawned, beginning with revolts in America and France, political changes were then pushed forward in other countries partly as a result of upheavals of the Napoleonic Wars and their impact on thought and thinking, from concepts from nationalism to organizing armies. The early period ended in a time of political and economic change, as a result of mechanization in society, the American Revolution, and the first French Revolution; other factors included the redrawing of the map of Europe by the Final Act of the Congress of Vienna and the peace established by the Second Treaty of Paris, which ended the Napoleonic Wars. In the Americas, pre-Columbian peoples had built a large and varied civilization, including the Aztec Empire, the Inca civilization, the Maya civilization and its cities, and the Muisca. The European colonization of the Americas began during the early modern period, as did the establishment of European trading hubs in Asia and Africa, which contributed to the spread of Christianity around the world. The rise of sustained contacts between previously isolated parts of the globe, in particular the Columbian Exchange that linked the Old World and the New World, greatly altered the human environment. Notably, the Atlantic slave trade and colonization of Native Americans began during this period. The Ottoman Empire conquered Southeastern Europe, and parts of West Asia and North Africa. In the Islamic world, after the fall of the Timurid Renaissance, powers such as the Ottoman, Suri, Safavid, and Mughal empires grew in strength (three of which are known as gunpowder empires for the military technology that enabled them). Particularly in the Indian subcontinent, Mughal architecture, culture, and art reached their zenith, while the empire itself is believed to have had the world's largest economy, bigger than the entirety of Western Europe and worth 25% of global GDP. By the mid-18th century, India was a major proto-industrializing region. Various Chinese dynasties and Japanese shogunates controlled the East Asian sphere. In Japan, the Edo period from 1600 to 1868 is also referred to as the early modern period. In Korea, the early modern period is considered to have lasted from the rise of the Joseon Dynasty to the enthronement