Who was the first leader of the soviet union?

Aside from low birthrates and high death rates, what can cause a country’s population to decline

What does the timeline above show about the consequences of the persian wars? a. each city-state of greece had equal influence after the wars. b. athens and sparta continued attacking persia after the wars had ended. c. persia continued to dominate greece for years after the wars. d. the alliance between athens and sparta ended shortly after the wars.

What were some effects in world war 1 in europe ? ( and only in europe)