This policy was called "containment" - the idea was to contain communism from spreading to new countries without trying to actively challenge the communist system in the countries that already had it.
This policy lead to some proxy wars, in which the US fought the Soviet Union for the free countries.
For a historical enquiry to commence, the students or persons of interest must be able to frame a question first. For this to take place, the teachers must provide evidences or documents beforehand for the students to immerse themselves on and scrutiny for problem identification and question formulation that will be the basis later on as the inquiry progresses.
The only member of the " Narvaez " group to return to Spain after being a prisoner of the American Indians was Cabeza de Vaca.
The banks did not have any backup incase the stock market failed. There was no security of peoples money. They didn't have enough money in them.