Explain the Colombian Exchange at least a paragraph .PLZ HURRY

Mercantilism, an economic theory that rejected free trade and promoted government regulation of the economy for the purpose of enhancing state power, defined the economic policy of European colonizing countries.

Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World.

The process by which commodities, people, and diseases crossed the Atlantic is known as the Columbian Exchange.

Explanation:

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation: