Explain how terry Texas rangers contributed to the Civil War efforts of the south

Terry’s Texas Rangers were a cavalry unit of mounted riflemen who fought many battles for the Confederacy in states east of the Mississippi River: Tennessee, Kentucky, Georgia, and the Carolinas. This was unusual because many Texan regiments stayed within Texas, defending the ports. Terry’s Texas Rangers participated in the Battle of Shiloh, also known as the Battle of Pittsburgh Landing. The Battle of Shiloh was a major Confederate offensive against Union troops led by General Ulysses S. Grant in an effort to stop Union advances into northern Mississippi. It was an extremely bloody battle for both sides. The unit’s founder, wealthy planter Benjamin Franklin Terry, was killed early in the war in 1861, but the loyal regiment retained his name.

#2 the answer is d

#3 the answer is a

#4 the answer is b

the name of the theory is landmass theory.