Why did the ancient city-state of athens and sparta develop different political systems?

The mountainous topography of the Greek peninsula resulted in the isolation of these two city-states.

Athens developed a system that valued philosophy and active political involvement by its citizens in an early form of democracy. (Note that it wasn't full democracy as we'd think of it today, as those who had a political voice were free men, not women or slaves.)

Sparta developed a militaristic system that valued physical training and military service, as well as a strict loyalty to the state.

soviet influence spread across eastern europe sharply during and after wwii. the soviet armies liberated the countries in eastern europe and occupied them from the germans as they were forced to retreat towards germany.

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893