The Union's victory at Gettysburg was significant because it? А.) prevented Britain and Russia from intervening in the Civil War
B.) prompted Abraham Lincoln to issue the Emancipation Proclamation
С.) halted the last major Confederate invasion of the North
D.) gave the Union control over the Mississippi River
E.) caused the Confederacy to surrender

Help please ASAP!!!

c

Explanation:

idk you know what i mean hahahaha

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.