Answer:
. Bill Robinson George Cohan Robert Frost. Bill Robinson was the premier black entertainer during the first part of the twentieth century
If im not wrong its Martin Luther
The Roman Empire Split & Theodosius I made it the official religion of the Roman Empire
These journalists were called muckrakers. They basically "raked the muck" out of society to make it a better place. They uncovered unsafe working conditions and unjust business practices and wrote about them to try to expose corruption.
It's referencing the physical position of the country; specifically the term "landlocked" is what gives it away.