梭发那·富马亲王
Elections were held in 1955, and the first coalition government, led by Prince Souvanna Phouma, was formed in 1957. The coalition government collapsed in 1958. In 1960 Captain Kong Le staged a coup when the cabinet was away at the royal capital of Luang Prabang and demanded reformation of a neutralist government. The second coalition government, once again led by Souvanna Phouma, was not successful in holding power. Rightist forces under General Phoumi Nosavan drove out the neutralist government from power later that same year. The North Vietnamese invaded Laos between 1958–1959 to create the Ho Chi Minh Trail.