Which is the correct order of presidential succession of the officials losted here 1 speaker of the house 2 president pro tempore of the senate 3 vice president 4 secretary of the state?

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.

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Were african-americans allowed to serve in the military in wwi?