This revolution lasted till 1979 in Nicaragua. Nicaragua had been ruled by a right-wing government to a left-wing government in one year. General Augusto Sandino (left-wing) started attacking people. They killed some US soldiers that were helping the right-wing people. It all started in 1926 and in 1934 General Anastasio Somoza of the right wing met Sandino to make a peace treatment. Then from 1937-1979 Nicaragua was ruled by the Somoza family. That means that the revolution caused by the lefties failed. Then 1978 the Sandinistas planned a major attack and in 1979 they had complete power. They craeted the Fundamental Law of State. This laws declared equality and another human rights. They were united with the Soviet Union and Cuba. They sent them financial and military help. The Contras was a group that fought against the Sandinistas. They fought from 1979-1999. In the late 1990s the Contras agreed to make negotiations with the Sandinistas.
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