I believe the answer is C.
Technology is probably the answer that you need. Other answers such as internet, cell phones, and airplanes are suitable answers as well.
<span>Fighting that involves opposing groups of citizens from the same country is called a Civil War</span>
The statement is
"True".
The North Vietnamese government and the Viet Cong were
battling to unify Vietnam. They saw the contention as a colonial war and a
continuation of the 1st Indochina War against powers from France and
later on the US. Starting in 1950, American military consultants touched base
in what was then French Indochina.