U.S. History some WWII or after questions?

Question: U!.S!. History some WWII or after questions!?

1!. In the 1920's memberships to unions did what!?

2!. the first practical peacetime use of airplanes was what!?

3!. What were some of the effect of the Great Depression!?

4!. What march on Washington was organized on July 1, 1941!?

Can someone answer them!? or at least some of them
Thanks-Www@QuestionHome@Com

Best Answer - Chosen by Asker:

1!. Declined

2!. Can probably find in here: http://query!.nytimes!.com/mem/archive-fre!.!.!.

3!. 1!. Unemployment, 2!. Homelessness, 3!. Poverty, 4!. Destruction of families, 5!. Farm losses

4!. Look Here: http://www!.blackpast!.org/!?q=aah/march-wa!.!.!.Www@QuestionHome@Com

Changed the way employers treated the employee's

Delivering the mail nationwide!.

business and family life went down the poor got poorer and the rich got poor too everything fell apart!.Www@QuestionHome@Com