What is meant by the columbian exchange? who was affected the most by the exchange?

The Columbian Exchange was the process which commodities, people and diseases were crossed between the Atlantic, from European powers to the Colonies in South America.

The Native Americans were most affected by the Exchange because European powers removed their goods, used their native to work and sometimes enslaved them. Colonists were also prohibited from trading with other countries.

This affected production in the New World because Europeans removed most of goods native used to sell it, disrupting native economies.

the answer is a. since they were a huge producer of cotton and wanted the most money for it.

the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.