While the British cultural influence remained strong into the 21st century, other influences became increasingly important. The Hawaiian sport of surfing was adopted in Australia where a beach culture and the locally developed surf lifesaving movement was already burgeoning in the early 20th century. American pop culture and cinema were embraced in the 20th century, with country music and later rock and roll sweeping Australia, aided by the new technology of television and a host of American content. The 1956 Melbourne Olympics announced a confident, prosperous post-war nation, and new cultural icons like Australian country music star Slim Dusty and dadaist Barry Humphries expressed a uniquely Australian identity.