Because they reflect historians points of view most important events. Hope this helped <3
Answer:
Colonization ruptured many ecosystems, bringing in new organisms while eliminating others. The Europeans brought many diseases with them that decimated Native American populations. Colonists and Native Americans alike looked to new plants as possible medicinal resources.
Explanation:
The Marshall plan helped in stopping the communist aggression and expansion in Europe during the Cold War by establishing a global trade wherein it emphasizes "free market" and "encourage European peace." The plan helped to economically sustain and stabilized the war-torn countries in Europe.
Africa had to trade for cotton and slaves for the spices, tapestries and glass beads of china, India and the Ottoman Empire
Explanation:
Towards the western verge of the Silk Road is the Ottoman Empire. Present day turkey is the place which was ruled by ottoman Turks and Silk Road extended from china to central Africa. Cotton which was the primary crop of west Africa was traded on the silk road with China in exchange to porcelain, glass products and silk and spices.
Ottoman Empire which also merchandised on the Silk Road procured the slaves of Africa. Central African slaves were purchased by Ottoman Turks. Under Islamic law slaves were to be fed with food and shelter and they have to be given good care by their owner. Slaves were also made unrestrained and were given an opportunity to start a new life with. Ottoman Turks were religious and treated slaves as part of their family.
For several years, migration has
been attributed to climate change. People back then rely on plants and wild
animals and marine life. However, periods of and cold had a great effect on the
lives and development of plants and animals. Climate changes greatly affect what
kind of plants will grow on a certain area (cold or hot area), thus, depends
what animals will be there too. People need to go where abundant food is. When
there is scarcity of food in a certain area, they are forced to move to another
place where there is enough food. People back then moved out due to intense
cold and intense heat. Where there is cold, they look for a warmer place, where
there is intense heat; they look for a better place to cool off.
