African-American music is an umbrella term covering a diverse range of music and musical genres largely developed by African Americans and their culture. Their origins are in musical forms that first came to be due to the condition of slavery that characterized the lives of African Americans prior to the American Civil War. Slavery and other impositions such as the Jim Crow laws shaped the world view of African Americans. Some of the globally most popular music types today, such as rock and roll, country, rock, funk, jazz, rap, blues, hip-hop, and rhythm and blues were developed from the worldview of the African Americans who created and influenced these genres. It has been said that "every genre that is born from America has black roots."