List some of the cardiovascular devices and procedures that Michael DeBakey invented and/or prevented. (Site 1)

The supreme court ruled that slaves could not sue because they could not read. they could not become lawyers. they lived in southern states. they were not considered citizens.

What event had weakened florida’s economy immediately before the start of the great depression? a) the freezing of orange trees b) the end of florida’s land boom c) the start of another world war d) the building of florida’s railroads

What happened as agriculture became entrenched in the south ?