The rivalry between Jay-Z and Nas started long before they were both famous rappers. The two men grew up in rival neighborhoods in Brooklyn and Queens, and they were constantly competing with each other. The rivalry eventually spilled over into the music industry, and the two men have been dissing each other in their songs for years. While the feud between Jay-Z and Nas may have started over petty rivalries, it has taken on a much bigger significance in the rap world. The two men are considered the best rappers of their generation, and their feud has become one of the most highly anticipated battles in rap history. The rivalry between Jay-Z and Nas is a classic example of the competition that exists within the rap industry.