The United States was no longer viewed as a powerful nation.
<u>Explanation:</u>
Spanish–American War took place in the year of 1898 between Spain and United States of America. The Spanish-American war was started due to the explosive attack on the battleship USS Maine in Havana Harbor. The war went on for four months and came to an end after signing the Treaty of Paris.
The government of Spain and America signed this "<u>Treaty of Paris"</u> and made Cuba independent from Spain. America got the territories in the western Pacific and Latin America. So they expanded the foreign trade.
The answer is D. Nixon resigned
The correct answer is A. Each program was based on the knowledge of the previous ones.
The Mercury program was the first American manned space program developed between 1961 and 1963 in the framework of the space race with the Soviet Union.
Based on the knowledge provided by the Mercury program, in 1965 NASA launched the second American manned space program, Gemini, whose main goal was to develop the ability necessary for space encounter and coupling.
These abilities were fundamental for the third program, the Apollo missions, whose main objective was to put the first men on the moon, a goal that was accomplished in 1969.
