1, 1863, three years into the war. ... Now the war was about ending slavery, which led to the tide changing in favor of the Union under the leadership of Ulysses S. Grant. The Emancipation Proclamation didn't free all slaves, just those living in Confederate states. Hope that helped!!
Pioneer settlers were sometimes pulled west because they wanted to make a better living. The biggest factor that pulled pioneers west was the opportunity to buy land.
Manifest destiny was caused by the fact that the American people were historically connected to English civilization, this gave them a sense of superiority over the other peoples who lived in North America. Because of the fact that they were white and civilized, the Americans felt superior to the Indians.
Your 2nd and 3rd options are the correct answers. Monarchies were not quickly changed into democracies because it was much more complicated to change a government. You can't do that overnight.