Mao era

In 1970, Lon Nol overthrew Sihanouk, and the latter fled to Beijing, where Pol Pot was also visiting. On the advice of the CCP, the Khmer Rouge changed its position, and in order to support Sihanouk, it established the National United Front of Kampuchea. In 1970 alone, the Chinese reportedly gave the United Front 400 tons of military aid. In April 1974, Sihanouk and Khmer Rouge leaders Ieng Sary and Khieu Samphan met with Mao in Beijing; Mao supported the policies which the Khmer Rouge proposed, but he did not want the Khmer Rouge to marginalize Sihanouk after they won the civil war and established a new Cambodia.

Popular Sovereignty: (pronounced sov-rin-tee) This doctrine was prominent during the debate over slavery in the territories. Popular sovereignty said that the people of each territory should be able to decide for themselves if slavery should be allowed in their territory when it became a state.

Coup de Main: (pronounced koo-duh-mahn) A French term used to describe a quick, vigorous attack that surprises the enemy.

Demonstration: A military movement which is used to draw the enemy's attention, distracting the enemy so that an attack can be made in another location.

Secession: (pronounced si-sesh-uhn ) Withdrawal from the Federal government of the United States. Southern states, feeling persecuted by the North, seceded by voting to separate from the Union. Southerners felt this was perfectly legal but Unionists saw it as rebellion.

Flank: Used as a noun, a "flank" is the end (or side) of a military position, also called a "wing". An unprotected flank is "in the air", while a protected flank is a "refused flank". Used as a verb, "to flank" is to move around and gain the side of an enemy position, avoiding a frontal assault.