Vovinam to demonstrate Vovinam publicly in Hanoi with his disciples in 1940, Nguyễn was invited to teach the art at Hanoi's Ecole Normale, and Vovinam gained in popularity. During the following years, political unrest increased throughout Vietnam; due to the system's nationalist political orientation, the art came under suppression. By 1954, Nguyễn had emigrated to South Vietnam, where he was able to continue to teach and establish Vovinam schools. After his death in 1960, Grandmaster Le Sang continued the development and international promotion of Vovinam until his own death on September 27, 2010. The first Vovinam school outside of Vietnam was
Martial law in the United States congressional approval. Throughout United States history are several examples of the imposition of martial law, aside from that during the Civil War. As a result of the Boston Tea Party, Parliament passed the Massachusetts Government Act, one of the Intolerable Acts, which suppressed town meetings and assemblies, and imposed appointed government, tantamount to martial law. During the War of 1812, US General Andrew Jackson imposed martial law in New Orleans, Louisiana before repulsing the British in the Battle of New Orleans. Martial law was also imposed in a four-mile radius around the vicinity. When word came of the end of