The war ended when they signed the Treaty of Guadalupe Hidalgo. It helped the leaders shape their decisions about the Civil war.
Fugitive Slave Act
It mainly was about any slave that escaped would be returned to their owners. They didn't like this in the North because they wanted slavery to end. In the South, they were all in favor because they wanted their "property" to be returned to them.
Uncle Tom's Cabin Was Released
It caused many people to turn against slavery and the people in the South didn't like this. They all wanted slavery, but the people who lived in the North all turned against slavery because of this book.
Bleeding Kansas shocked Northerners
This was mainly a time where people who were opposed to slavery were safe. The people who supported slavery were the ones that were in harms way. They were the ones who were being attacked and some of them have been killed.
Charles Sumner is Attacked by Preston on the Floor of the Senate
The name of this one pretty much says it all. they didn't like this because he was attacked because he was discussing his point on slavery.
Dred Scott Decision
He was basically a slave that thought if he went to a state that had no slavery, he would be considered a free man for the rest of his life.
John Brown Raiding Harpers Ferry
he attempted to give all the slaves weapons so that they would be able to do a revolution to the slave owners.
John Brown Execution
he was killled because he was accused of treason. (by the way, i couldnt find a date.)
Abraham Lincoln was elected president
this was the main reason that the civil war began because Lincoln was the one that actually put it into action.