Undefined. She had to go to court again 4 years later to determine what was to be done.
Basically. They had the biggest ego ever. The North knew that they had the more resources and the more superior military force. So they basically underestimated the South. Also it was due to the North's military generals. They didn't lead the troops the right way and all in all, that led to early Confederate victory. The South had the superior military leadership against the North.
Article V of the U.S. Constitution talks about the process of modifying the Constitution. According to the article, the process to propose and ratify an amendment can be started by either the US Congress or the state legislatures:
Both the Senate and the House of the U.S. Congress can propose an amendment only if it reaches at least two-thirds of votes in favor. If the proposal is approved, then it goes to the state legislatures OR the state conventions so that it can be voted on. If the amendment is ratified by at least three-fourths of the state legislatures or the state convention, it becomes a law.
When the state legislatures start the process, they first have to propose a National Convention with two-thirds of votes. Once in the National Convention, the states legislature officially propose the amendment and is voted on. If the amendment is ratified by three-fourths of the state legislatures (or conventions in three-fourths of the states), it becomes a law.