The Viet Cong was a military unit that had both regular army forces and a guerrilla group. They were from the Southern part of Vietnam, but where fighting together with the North, against the US and the South. They were a massive organization, and were very successful on the ground, managing to win large portions of territory and control it, winning the majority of the battles. The US officials were portraying them as communists, though they were not initially, but were just fighting against the South and its policies, and against the US interference. Eventually they were under the command of the North, and started to be active participants in the setting up of the communism in the country.
Less than "fifteen percent" of the Japanese people are farmers (in Japan, that is), due mostly to a large technological boom period and the fact that land is limited.
He was a populist member of the Democratic Party and rose to national prominence during the Great Depression for his vocal criticism of President Franklin D. Roosevelt and his New Deal, which Long deemed not radical enough.