Death rates in the 20th century deaths in the 1900s with a death toll between 40,000,000 and 85,000,000 deaths. Other predominate wars in the 1900s include World War I with up to 65,000,000 deaths, the Russian Civil War with up to 9,000,000 deaths, the Afghan Civil War with up to 2,000,000 deaths, and the Mexican Revolution with up to 2,000,000 deaths. Several other major wars took place in the 20th century, such as the Iran–Iraq War, the Soviet–Afghan War, the second Sudanese civil war, the Korean War and the Vietnam war. It is estimated that traffic collisions caused the death of around 60 million people during
American social dancing in the 20th century as swing dancing are still done, but are not necessarily well known or popular. Ragtime and jazz dance were both iconic dances of the 20th century. Both of them contained syncopated rhythms and dance steps that were very different from the polite and proper dance steps from centuries before. The new technology that came with the century made way for new ways of thinking, which in turn brought new music and exciting new dances. Ragtime music was at the height of its popularity from 1895 to 1918. Soon there were also dance moves created to go along with the music.