What was the basis for citizenship in Athens Greece?

How does the pyramid of giza include art, science, math, or a need for infrastructure?

What would be considered a secondary source about the assasination of abraham lincoln

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.