What invention helped ancient Mesopotamians harvest their crops quickly and efficiently? А the adze
B
the sickle
с
the steel plow
D
the stone mortar

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.

abraham lincoln

the adoption by russian princes of the mongols' diplomatic rituals

bloodiest single day of war   |   gettysburg

where the civil war ends for good   | appomattox court house

the first major land battle; south wins | bull run/manassas (va)

gives union control of the mississippi river |   vicksburg

lee’s first tactical defeat; big win for union |   fort sumter1

with lincoln's re-election |   atlanta

south wins

splits confederacy in two for the duration of the war,

antietam