Operation Matador was proposed as a defensive maneuver in this nation, but it was not carried out despite the wishes of Arthur Percival. CentralWorld was destroyed as a result of protests in this nation, which experienced a bloodless military coup in 2006. The regent Pridi helped organize a resistance movement here that was started by its envoy to the U.S., Seni Pramoj. In 2010, the Red Shirts movement staged large protests in this nation, which was allied with Japan during World War II. Under the Chakri Dynasty, a series of kings called Rama ruled this nation. For 10 
Operation Matador was proposed as a defensive maneuver in this nation, but it was not carried out despite the wishes of Arthur Percival. CentralWorld was destroyed as a result of protests in this nation, which experienced a bloodless military coup in 2006. The regent Pridi helped organize a resistance movement here that was started by its envoy to the U.S., Seni Pramoj. In 2010, the Red Shirts movement staged large protests in this nation, which was allied with Japan during World War II. Under the Chakri Dynasty, a series of kings called Rama ruled this nation. For 10 points, identify this country once dominated by the Ayutthaya kingdom, formerly known as Siam.
Operation Matador was proposed as a defensive maneuver in this nation, but it was not carried out despite the wishes of Arthur Percival.
Kingdom of Thailand [or Ratcha Anachak Thai]