How did movies help to introduce Rock and Roll culture to mainstream audiences in the 1950s?

What made the middle colonies different from new england and the southern colonies?

What stalled germany's initial invasion into france in 1914

Which of the following could be seen as a weakness of a two-party system? a. the two-party system limits voters' options in electing officials.b. the two-party system limits debate on issues.c. the two-party system limits the range of solutions that will be considered.d. all of these are weaknesses