What was good abt technology in 1930

Why is it useful for historians to base certain studies on the analysis of historical themes

What did sargon's empire have in common with other mesopotamian city-states? a. it extended over a greater territory than anyone had ever conquered before. b. it fought with surrounding city-states. c. it covered an area from the mediterranean sea to the persian gulf. d. it had a professional army.

Before the civil war, the constitution protected slavery -true -false