Which of the following was an effect of the increased use of canals and railroads in the mid-1800s?
group of answer choices
cotton cultivation increased.
settlement of the west coast started.
shipping costs dropped significantly.
communication speed decreased greatly.

Shipping costs dropped significantly.

Explanation:

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.