The answer is the rule of law
Answer:
The decision was risky
Explanation:
The decision was risky because the U.S didn't know what laid on those borders towards the west coast and had to have that whole area explored and mapped, they bought it without knowing what the area was like.
So the president could have bought useless land and they wouldnt have known it, luckily it wasnt lol
New Frontier (1961–63) Term describing the legislative programme of US President John F. Kennedy. The programme included massive expenditure on social reforms and welfare, as well as ambitious new projects such as the Peace Corps and space exploration.
about 9,000 is the answer