In 1956 the term Viet Cong came into use and gradually replaced the older term Viet Minh. The government-controlled Saigon press first started using the term referring to communists in South Vietnam as Viet Cong a shortening of Viet Nam Cong-San which means "Vietnamese Communist.
The answer is weathering. Weathering is where rocks or other materials are broken down because of forces like wind or water. This is different than erosion, which is the process where the broken down materials are moved.
Ida B. Wells, daughter of slaves, a journalist, that was born in Holly Spring Mississippi last July 16, 1862. She led the anti-lynching crusade in the United Sates in the 1890s and went on to found and become integral in groups striving for African-American justice.