The southern economy depended very much on slavery, using slaves to pick cotton and other things for the farmers. Normally the more slaves you had, the richer you were. Slaves were very important to the southern economy because southerners depended solely on slaves' labor. The families were affected when they could no longer keep slaves so the South was very mad because this was their main source of production. Once rich families no longer had laborers, causing loss of money and crops. The whole southern economy was affected by the loss of slaves but when slaves were allowed the southern economy was booming.
One branch of government can check the other through the usage of "Checks and Balances", which states that no one branch can become to powerful, as the others have the right to suppress the other branch's power.
hope this helps
They contributed to World War 1 through the assassination of Archduke Franz Ferdinand. The Black Hand was part of a Pan-Slavist movement in which they wanted to unite territories of South Slave that had been annexed by Austria-Hungry. Hopefully this helps.
