The answer is B, white Americans became fearful that the rebellion might spread to american shores.
2. to allow more trade between countries
Yep, number 2 :D
The answer is two and a half years.
The United States watched World War I from afar for two and a half years before entering and declaring a war against Germany on April 6, 1917. Before entering the war, United States was intent on keeping a neutral relationship between countries that are involved in the war.
Religious beliefs and practices, geography around Nile River and the creation of the Rosetta Stone, contributed significantly to the Egyptian security and stability. The only statement that did not contribute the the Egyptian's security and stability is the regular flooding of the Nile River.
The answer would be letter D.