How did the damage caused by slavery continue to affect Africa even afterslavery was abolished?
A. It inspired U.S. leaders to greatly increase economic aid to Africa.
B. It led African governments to cut off trade with the rest of the
world.
C. It led to the spread of deadly diseases brought to the continent by
freed slaves.
D. It produced conditions that helped European powers conquer
most of the continent.

The correct answer is A, as the statement is true. General George McClellan was Lincoln's Democratic opponent in the 1864 election.

In the Presidential Election of 1864, Abraham Lincoln was reelected as president. Lincoln competed under the flag of the National Union against his former superior general in the Civil War, the Democratic candidate, George B. McClellan. McClellan was the "candidate for peace", but he did not personally share the ideologies of his party.

On November 8, Lincoln won by more than 400,000 popular votes and easily secured an electoral majority.

its true general George McClellan was Lincoln's Democratic opponent

The country that suffered a great defeat in the Crimean War was Russia. It was a dispute over Russian influence in the Near East. The French and the British were allies of the Ottoman Sultan against Russia's advance in the territory. It was the first war between major powers, and Russia suffered a great defeat. The immediate cause was about the rights of Christian minorities in the Holy Land.

Russia suffered a great defeat in the Crimean War. The war was fought over control of the Black Sea and the Balkans, and Russia was ultimately defeated.

There were a number of reasons for Russia's defeat.

1. First, the Russian military was not prepared for a modern war. The Russian army was still using outdated tactics and equipment, and it was not well-trained or equipped to fight in the mountainous terrain of Crimea.
2. Second, the Russians were fighting against a much better-equipped and better-trained enemy. The French and British armies were at the forefront of military technology, and they had the advantage of fighting on the defensive.
3. Third, the Russians were hampered by poor logistics. The Russian army was poorly supplied, and it was difficult to transport troops and supplies to Crimea.

So,  the Crimean War was a major setback for the Russian Empire.

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First of all it is very important to define the events here.

1) Korean War was a conflict which began when some 75.000 soldiers from the North of Korea People's Army Poured the 38th parallel the boundary between the Soviet-backed the Democratic  people's Republic of Korea to the north and the north western republic of Korea to the South.

2) Cuban Missile Crisis was a direct and dangerous confrontation between the U.S. and the Union Sovietica  during cold war.( 1962).

3) Vietnam War:  Was a long, costly conflict between communist north of Vietnam and the Viet Cong again south vietnam and the United States.

The politics divisions produced that these conflicts took more time.