Which of the following contributed to demographic changes after world war ii?
a. interstate highways
b. communism in hollywood
c. the truman doctrine
d. the marshall plan

Select the correct answer from each drop-down menu. different sources are aimed at different audiences. sometimes a source can be directed at more than a single group of usually aimed at the general population across the globe. some sources may have a very specific audience. be specifically aimed at students or scholars with a background in literature.