History of Vietnam since 1945 unstable as no government could keep power for long. There were more coups, often more than one every year. The Communist-run Viet Cong expanded their operation and scored some significant military victories during this period. In 1965, US President Lyndon Johnson sent troops to South Vietnam to secure the country and started to bomb North Vietnam, assuming that if South Vietnam fell to the Communists, other countries in the Southeast Asia would follow, in accordance with the domino theory. Other US allies, such as Australia, New Zealand, South Korea, Thailand, the Philippines, and Taiwan also sent troops to South Vietnam.
What Happened to Us the song with Stan Walker during the Australian leg of Chris Brown's F.A.M.E. Tour in April 2011. Mauboy and Walker later performed "What Happened to Us" on "Dancing with the Stars Australia" on 29 May 2011. From November 2013 to February 2014, "What Happened to Us" was part of the set list of the To the End of the Earth Tour, Mauboy's second headlining tour of Australia, with Nathaniel Willemse singing Sean's part. Source: What Happened to Us "What Happened to Us" is a song by Australian recording artist Jessica Mauboy, featuring English recording artist Jay Sean. It was written