Oceans can be seen as barriers to trade or as bridges between

cultures. Explain how the Columbian Exchange demonstrates one

of these views and support this explanation with specific facts.

Columbian Exchange refers to the process by which commodities, people, and diseases crossed the Atlantic, it is two-way exchanges between the Americas and Europe/Africa.

Due to the Columbian Exchange the Atlantic (ocean) was seen as a barriers to trade between Europe and America. For example:  In Europe new types of foods improved diets and lifespans and European economies also improved through trade.  While in America, animals like the cow and the horse changed the lives of many Native American groups.

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.

valentina tereshkova

soviet cosmonaut valentina tereshkova became the first woman to fly to space when she launched on the vostok 6 mission june 16, 1963. valentina tereshkova was the first woman to go into space. in 1963, she spent almost three days in space and orbited earth 48 times in her space capsule, vostok 6.jan 22, 2018