It’s B, GDP. It stands for, consumption + government spending + investment + net exports.
After the Civil War, many newly freed slaves migrated to the west because of the the Homestead Act that was passed in the year 1862. his act promised free land to all the settlers. 160 acres of free land or at a minor cost was promised to all those that settled in the west and had no criminal cases lodged against them for acting against the government of the United States.
After the 8.8 magnitude earthquake, the resulting tsunami killed around 500 people.
A central issue at the Convention was whether the federal government or the states would have more power. Many delegates believed that the federal government should be able to overrule state laws, but others feared that a strong federal government would oppress their citizens.
The delegates compromised by allotting specific responsibilities to the federal government while delegating all other functions to the states.