Which term refers to the policy of containing communism and preventing its spread into more countries?

the Truman Doctrine

the Iron Curtain

the Berlin Wall

the Marshall Plan

Playing house is a form of it children learn about the expectation and roles that they will have as adult family members

The telegraph, the transatlantic telegraph cable, and the telephone were important to businesses after 1850 because of a. they created a system for developing new inventions. b. they filled a need that other inventions of the day could not. c. they attracted investors and created the stock market. d. they made picture-taking a popular american pastime.

How did louis sullivan and william jenney change the face of american cities in the late 1800s