How did wars in china and eastern europe lead to increased immigration to the united states?

Using the pictures and text for reference describe what had to be done to create the central park today

Why did poland, hungary, and east germany join the warsaw pact? a)their people voted to join in free elections. b)their efforts to join nato failed. c)they wanted to stop the spread of communism in europe. d)they were soviet satellites that had little choice.

Which of the following was a crop not grown in the olmec farming ? potatoes or squash or maiden or beans