Answer:
Option: A. Germany invaded the neutral country of Belgium.
Explanation:
Great Britain stepped into World War I when Germany invaded Belgium. Britain had promised to support Belgium under the Treaty of London of 1839. Belgium was a neutral country which guaranteed protection from Britain. The Germans wanted the British to ignore the treaty and let them pass through Belgium. The British protect Belgium because its ports were close to the British coast. German control of Belgium would have been a threat to Britain. The British wanted to crush Germany's military capability as they entered into the war.
A lot of sea expeditions, and because not much of the world was known
I believe it would be milestones
The fact that the Marshall Plan financially aided European countries to build up their governments and economies after WWll worsened relations between the USA and the USSR
The initial effects of the atomic bomb dropped on Hiroshima and Nagasaki were: the entire city was razed to the ground and nothing left standing.
The answer to your question would be letter B. The other letter choices are incorrect.