Why is Mumbai the capital of Maharashtra?

Mumbai became the capital of Maharashtra on May 1, 1960, following the linguistic and political reorganization of the region.12

Prior to this, the city—then known as Bombay—served as the capital of the former Bombay state, a legacy of the British colonial period during which it functioned as the capital of the Bombay Presidency. Following Indian independence, Bombay state included both Marathi-speaking and Gujarati-speaking populations. Intense protests by Marathi speakers, who sought a state defined by their language, led to the partition of Bombay state into the modern states of Gujarat and Maharashtra. Upon the creation of Maharashtra in 1960, the city of Bombay was retained as its capital. The city was officially renamed Mumbai in the mid-1990s.123