Which of these describes the most signifint long term impact of the mongol empire between 1100-1400

From the soviet point of view, which reagan policy most threatened to create a new arms race? a. strategic defense initiative b. u. s. support for israel c. aid to the anti-soviet rebels in afghanistan d. iran-contra scandal

The expansion of the railroad networks led to

Who were the copperheads? a. a native american tribe that rose up during the war b. northern democrats opposed to the war c. ships that ran the union blockade d. an elite force of union soldiers in the west