Historians rely on primary sources because these sources

How did the union blockade of the southern coast affect the confederacy? it forced the confederacy to build new railroads. it contributed to shortages of weapons and food. it encouraged europe to trade with the south. it halted all trade, leaving the south without supplies.

The treaty of versaillies did not provide additional rights to the non-european nations that were held by the central powers. control over these regions was given to the allies.

Which factor was a major cause of the great depression of the 1930?