New York has five boroughs and one of them in Brooklyn. It is co-extensive with King's County. Brooklyn is remarked as the most crowded city in New York state. and the second most populated city in the United States of America. It is named after a dutch village called Breukelen.not only this the Brooklyn borrow also has some land of the Queens Borough at the western side of Long Island. Brooklyn is linked with Manhattan through several tunnels and bridges. Verrazano-Narrows Bridge connects Brooklyn with the Stated islands. Brooklyn was an independent city but on January 1, 1898, it combined with the Five other boroughs due to several political and regional campaigns and several clashes were the main cause.

https://en.wikipedia.org/wiki/Brooklyn