The primary purpose of President John F. Kennedy's promise and project to successfully land an American on the moon by the end of 1960s was to: Stimulate the American economy with additional investment and job opportunities.

Establish a permanent manned space station for scientific experiments and resource exploration.

Acquire greater scientific knowledge and understanding of the solar system and universe.

Enhance American prestige, prominence, and power in the space race and the Cold War rivalry with the Soviet Union.​

D Enhance American prestige, prominence, and power in the space race and the Cold War rivalry with the Soviet Union.​

Explanation:

Good luck

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.