Barbarian is another word for uncivilised person
Exodusters was a name given to African Americans who migrated from states along the Mississippi River to Kansas in the late nineteenth century, as part of the Exoduster Movement or Exodus of 1879. It was the first general migration of black people following the Civil War.
The "zoot- suit" riots took place in Los Angeles.
Lind's experiments at sea tested some potential cures for scurvy. His experiments were important because he discovered the use of citrus fruit as a cure for scurvy. It ranks as one of the first clinical experiments in the history of medicine.