<span>b. Ellis Island. is the answer.</span>
It said that as of January 1, 1863, all slaves in the rebellious states "shall be, thenceforward, and forever free." This was issued by Lincoln to preserve the nation into a battle for human freedom.
This is why leaders Followed a policy of appeasement
The Inca Empire used the Quechua communication system which was letters and Egypt used the Hieroglyphics which were symbols.
Hope this helps...have a good day!! ;)