In this installment of Crash Course World History, John Green explores the immense global impact of the Spanish Empire during the 16th and 17th centuries. The video details how Spain's conquest of the Aztec and Inca empires led to the extraction of massive amounts of silver, specifically from the Potosí mines in modern-day Bolivia. Green explains how this influx of precious metals didn't just affect Spain, but created the first truly global market, linking the Americas, Europe, and China in a complex web of trade and economics. The video dives deep into the unintended economic consequences of this wealth, specifically the concept of inflation. It illustrates how Spain's mismanagement of its silver windfall, combined with endless wars funded by that silver, ultimately weakened the empire rather than strengthening it. Simultaneously, the narrative shifts to East Asia, explaining how a change in Chinese tax policy created a insatiable demand for silver that eventually destabilized the Ming Dynasty's economy as well. This resource is highly valuable for history and economics classrooms as it moves beyond simple narratives of conquest to analyze systemic global connections. It helps students understand complex economic principles like inflation and supply and demand within a historical context. By connecting the mita labor system of the Incas to Spanish mining practices and finally to Chinese silk markets, the video demonstrates how local decisions can have profound global ripples, a concept central to understanding modern globalization.