Answer: Here's a reason.
Explanation:
The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. In the United States, the use of the bombs was widely praised by a public tired of war and high casualties.
Hope I helped.
The ensuing Mexican–American War was waged from 1846 to 1848 with the loss of many thousands of lives and the loss to Mexico of all of its northern provinces.
Answer: D is right. But there are also many other reasons.
Explanation: League of Nations was formed by Allied powers (from the WW I) so consequently it was viewed as "League of Victors". Moreover USA did not join, may other states did not join and later on League of Nations was unable the prevent outbreak of WW II.
In the beginning of the age of discovery, England and France were looking for a new path to get to Asia to trade. But after they found the America’s and the West Indies, colonization for more for power. The more colonies each country could establish, the more power the country would have. A lot of the colonies were also making the home countries lots of money from the fur trade and from cash crops and from the Colombian exchange.