Sudan’s many years of civil war have resulted from conflicts between

Muslim Arabs, and Christian and animist Africans.

Explanation:

Religion is the central factor in Sudan’s civil war. The North, with most of Sudan's land and population, is Muslim and Arabic-speaking, and their religion and language are both fundamental for their identity. On the other hand, the South´s identity is indigenously African, with Christian and Western influences.

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.

hello,

the steamboat is your answer.

it seems like its the only form of transportation on the choices.