Answer:
The Columbian Exchange: goods introduced by Europe, produced in New World. As Europeans traversed the Atlantic, they brought with them plants, animals, and diseases that changed lives and landscapes on both sides of the ocean.
Explanation:
Unresolved global conflict: <span>(1914–1945): World </span>War<span> I and World </span>War<span> II led to geopolitical changes, human and environmental devastation, and attempts to bring stability and peace.</span>