The attempt by Radical Republicans to remove President Andrew Johnson from office failed when
a. African Americans in Congress announced they would not participate in the process
b. Robert E. Lee publicly supported Johnson
C. he announced that he would not seek re-election
d. the Senate failed by one vote to convict him

it increase by 12% a year from 1812-1820

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.

the border between arizona and new mexico is a thin, black line; this indicates a state boundary.

its correct: it's a thin line, and it's a state boundary, correct