Why was Abraham Lincoln called the emancipator?answer should be of 200 words

Answers on this site are recommended to be of 90 words, so I'll try to stick around there and give you a basic foundation that you can build on.

To "emancipate" means to set free.  Lincoln is known as "The Emancipator" because it was during his time as president that the slaves in the United States were freed.

Lincoln can be credited with freeing the slaves in two ways.  First, he chose to fight a civil war against the South instead of allowing them to secede.  If they had seceded, they would have been able to keep their slaves.  By fighting, and winning, the Civil War, Lincoln allowed the slaves to be freed (this was done by the 13th Amendment to the Constitution, ratified after the war).

The second thing Lincoln did was to issue the Emancipation Proclamation, which went into effect on January 1, 1863.  This order freed all slaves in areas that were then rebelling against the US.  Although this order did not free all the slaves, it established the idea that the Civil War was to have freeing the slaves as one of its major goals.