It adds volume to the painting and makes it look 3D, without it the painting would look flat and cartoony.
There's no official answer, it's pretty much saying "Who did the first shot in the Boston Massacre?"
However, the term "Hip-Hop" was coined by Keith Cowboy, who was a rapper with Grandmaster Flash and the Furious Five.
The origin of Hip-Hop was in the 70's when there were block parties in the Bronx and the crowd was mainly African-American.
Some would say DJ Kool Herc is the person who started it.
Can you please tell me the time signature?