Which period of United States foreign policy focused on the containment of the spread of communism in other
mations?

The time of the Marshal plan was when the US was doing this.

Explanation:

A considerable period of United States foreign policy focused on the containment of the spread of communism in other  nations.

It began with the Marshall plan which basically gave reparations to other anons to rebuild and in turn follow the way of US in terms of economics.

Then there were many proxy wars and military coups that were designed to make sure that the spread of communism was stopped in the world .

This included the Korean war, the Vietnam war and many of the coups in the Latin America.

east-west schism. the greatest effect of the east-west schism was the creation of two separate churches that had previously been unified under one church, the eastern orthodox church and the roman catholic church.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories