Personally, I would write on limited government. You could talk about the foundation America was built on, and how families should have the sole rights to decide what to do in their homes and country, without being so affected by the government!!
Answer:
Lincoln called for 75,000 volunteers to enlist. Lincoln used judicial procedures to uphold the Union. Lee joined the Southern army as ALL slave holding states seceded.
The Congress of Vienna was considered a success because it was the first time in history that on a continental scale national representatives came together to formulate treaties, instead of relying mostly on messages from the several capitals. The Congress of Vienna was a conference headed by the monarchs of Austria and it was to provide a long-term peace plan for the superpowers of Europe and to have stability in Europe.