How did christopher colubuses discovery change the world?

Christopher Columbus's discovery of the Americas in 1492 fundamentally transformed global trade, politics, and culture. It initiated widespread European exploration and colonization, leading to the exchange of goods, ideas, and populations between the Old and New Worlds, known as the Columbian Exchange. This encounter also had profound and often devastating impacts on Indigenous populations, including disease, displacement, and cultural changes. Ultimately, Columbus's voyages marked the beginning of a new era in world history, shaping the modern geopolitical landscape.