What kind of clues does a historian look for

How were the economies of the northern and southern states different? how ere they the same? what factors led them to develop differently?

According to this map, which of these statements about cuban economic activity is true? a) coffee is not a valuable commodity in cuba. b) cattle ranching is found only in the western half of cuba. c) tobacco is grown in most areas of the country. d) manufacturing is limited to mostly the southern coast.

For the united state human rights have been tied to support for