By 1900, rural market zones in Bangkok began developing into residential districts. The Memorial Bridge was constructed in 1932 to connect Thonburi to Bangkok, which was believed to promote economic growth and modernization in a period when infrastructure was developing considerably. Bangkok became the centre stage for power struggles between the military and political elite as the country abolished absolute monarchy in 1932. It was subject to Japanese occupation and Allied bombing during World War II. With the war over in 1945, British and Indian troops landed in September, and during their brief occupation of the city disarmed the Japanese troops. A significant event following the return of the young king, Ananda Mahidol, to Thailand, intended to defuse post-war tensions lingering between Bangkok's ethnic Chinese and Thai people, was his visit to Bangkok's Chinatown Sam Peng Lane (), on 3 June 1946.