Mumbai: India's bustling metropolis with rich history and vibrant culture

• Mumbai, formerly known as Bombay, is the capital of Maharashtra state
• Home to 15.4 million people, covering 603.3 square kilometers
• Renamed from Bombay to Mumbai in the 1990s to distance from colonial past
• Known for Bollywood film industry, historic landmarks, and economic importance
• Faces challenges like overcrowding and air pollution despite being one of India's most helpful cities