Why is the American hip-hop circle divided into east and west coasts?

In the early 1990s, rap entered a new era, and Dr. Derry, a grandmaster in the western United States (the main member of the strongest hip-hop group in the 1980s) created a new trend! He and his first generation "disciple" Snoop Dogg created countless excellent works, and were the founders and representatives of the West Coast rap style at that time!

Then Dr. Dre found a talented young man Tupac with more potential than Snoop! After his "teaching", Tupac became the first person in the rap world at that time and the founder of western Gangsta Rap! ! Dre, Snoop and Tupac are the iron triangle of West Coast rap, and the leading figure of East Coast rap style was brought up by P. Diddy, the most famous creator at that time. He worked with the most famous street rapper Nas to complete the so-called East Coast style, and also created a different new trend, like Dre! P. Diddy also found a person who is no less talented than Tupac, his childhood sweetheart Biggie, the infamous B.I.G! The two of them have become the bosses of the east coast, which is equal to the iron triangle of the west coast! Then there is the so-called "rap war", two talented singers in the rap world, 2pac and Biggie. It led to the mutual destruction of the last two people (1996-97), which caused the greatest loss in the rap world! 97 years later, when the rapper fell into a trough, the East street rapper Nas turned the tide! Jay-Z, the brother who led Biggie's death, made rap rise again! ! The two of them became a "duo" in the rap world! The west was destroyed at that time!

The so-called two tigers are not allowed in one mountain, and there are no two kings in one country! ! After two years of "Double Heroes", Nas and Jay-Z broke up. Following in the footsteps of Tupac and Biggie, their struggle once again dragged down the rap world! The savior is a white man! Eminem, an unknown white child, finally met the great master Dr.Dre and plunged into his door! Together, they let the rap world enter a new era again from 2000! Eminem's time is up! ! ! If you want to rank all these people in the rap world! The first person is undoubtedly the most famous master Dr. Derry in the 1990s, followed by 2pac and Biggie 00, Eminem in 20 years, then Nas and Jay-Z, and then Snoop.