When did hip-hop begin

1. Types of Hip-hop

1.1. MCing/Rapping

1.2. D.J.ing/Rapping

1.3. Break Dancing

1.4. Graffiti Writing

2. Different Eras

2.1. 1980s

2.1.1. Grandmaster Flash

2.1.2. SugarHill Gang

2.2. Early 1980s

2.2.1. L.L.CoolJ

2.2.2. Run D.M.C.

2.3. Late 1980s-1990s

2.3.1. Public Enemy

2.3.2. Slick Rick

2.4. Early-Mid 90s

2.4.1. Wu-Tang Clan

2.4.2. Notorious B.I.G.

3. Subgenres

3.1. Gangsta-Rap

3.1.1. N.W.A.

3.1.2. Ica Cube

3.2. G Funk

3.2.1. Nas

3.2.2. Notorious B.I.G.

3.3. Alternative Hip-Hop

3.3.1. OutKast

3.3.2. Kanye