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A、have a hard struggle or fight
B、raise to a higher grad
C、come to a lower level or state
D、make the greatest possible use of
A、hinge on
B、be upon
C、fill up
D、clear up
A、The American Civil War was the costliest and deadliest war ever fought on American soil.
B、The main underlying causes of the American Civil War include simmering tensions between northern and southern states over slavery, states' rights and westward expansion.
C、The election of Abraham Lincoln in 1860 is the most significant cause of the American Civil War.
D、The supreme command of the Union armies, Ulysses S. Grant, led the armies to further pursue the Confederates along the Appomattox River, finally exhausting their possibilities for escape.
A、The actor and Confederate sympathizer John Wilkes Booth assassinated President Lincoln at Ford's Theatre in Washington.
B、The Union received the Confederate's surrender in North Carolina.
C、Ulysses S. Grant, the supreme command of the Union armies accepted the Confederates' surrender at Appomattox Court House.
D、President Lincoln used the occasion of the Union victory at Antietam to issue a preliminary Emancipation Proclamation.
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