Short answers, pulled from the story.
Hip-hop dance is a range of street dance styles primarily performed to hip-hop music or evolved as part of hip-hop culture. Breaking was created in the South Bronx, New York, in the early 1970s and is considered the first hip-hop dance style. The funk styles, including locking and popping, developed simultaneously in California.
Locking was created in 1969 in Los Angeles by Don "Campbellock" Campbell and popularized by his crew, The Lockers. Campbell is also credited as a founding member of The Lockers alongside Toni Basil, who managed the group and later won the Living Legend Award at the 2009 World Hip Hop Dance Championships.
Popping was created in Fresno, California, in the 1970s and popularized by Samuel "Boogaloo Sam" Solomon and his crew, the Electric Boogaloos. It serves as an umbrella term covering related illusionary styles including strobing, liquid, animation, tutting, gliding, and waving.
Street dancer Jeffrey Daniel taught Michael Jackson the backslide, which Jackson later called the moonwalk. Daniel first performed the move on the British television show Top of the Pops in 1982, marking the first time popping appeared on British television.
Krumping was created in the early 2000s in South Central, Los Angeles by Ceasare "Tight Eyez" Willis and Jo'Artis "Big Mijo" Ratti. It evolved from clowning, a face-painted style created in 1992 by Thomas "Tommy the Clown" Johnson, but focuses on highly energetic battles rather than entertainment at parties. The 2005 documentary Rize brought krumping mainstream visibility.
Safi Thomas founded the Hip-Hop Dance Conservatory in New York City in 2004, the only institution in the United States exclusively dedicated to hip-hop dance instruction, offering a three-year certification program. In 2007, the University of East London's Center for Performing Arts Development launched the world's only bachelor's degree program specializing in hip-hop, urban, and global dance forms.