What exactly is your question?
Answer:
The United States contributes to the end of World War II in Europe and in Pacific as given below.
Explanation:
During World War II, the United States began to provide military supplies and support to the Allies. In the final battles in the European Theatre, American played a vital role by helping the British forces in the D-Day when Nazi Germany surrenders its armed forces in 1945, marking the end of World War II in Europe.
After the attack on the Pearl Harbour, American entered into war and tried to capture the Pacific, which was under the control of Japan. Japan saw territorial expansion in Asia and the Pacific Ocean. The purpose was to become a superpower in Asia. The victory of the Battle of Midway (in 1942) played an influential role for the United States because they stopped Japan in expanding its power in the Pacific through defeating Japanese naval power.
The impact is that thousands of japenese were forced to work in labor camps due to their threat in WWll.
1. West Africa before the Portuguese was a thriving region. There were several kingdoms that were very wealthy, and the main reason for that was that they had lot of natural resources and the trade. These kingdoms were conducting the majority of the trade between Northern Africa and sub-Saharan Africa, so they were able to gain lot of wealth from the countless goods that were traded through their territories.
2. Europe after the Crusades experienced a real ''boom'' in the trade, thus in its economy as well. Through the Crusades, the Europeans were introduced to lot of goods from the Middle East and the rest of Asia. Lot of those goods were very useful or attractive, so the Europeans gradually started to engage in trade with Asia more and more, with the pinnacle of this trade being during the existence of the Mongol Empire.
3. America before Columbus was much more limited when it came to trade and commerce. Unlike the Old World, the civilizations in the New World were engaging into trade only with the civilizations that surrounded them, thus it was more locally or regionally. The majority of the people were still mostly producing goods just about enough to sustain themselves, so they were not engaging into a large scale trade with places further away.