Historically, the state of Gujarat has been one of the main centres of the Indus Valley Civilization. It contains major ancient metropolitan cities from the Indus Valley such as Lothal, Dholavira, and Gola Dhoro. The ancient city of Lothal was where India’s first port was established. Also, Dholavira, the ancient city, is one of the largest and most prominent archaeological sites in India, belonging to the Indus Valley Civilization. The most recent discovery was Gola Dhoro. All together, about 50 Indus Valley settlement ruins have been discovered in Gujarat. The ancient history of Gujarat was enriched by their commercial activities. There is a clear historical evidence of trade and commerce ties with Egypt, Bahrain and Sumer in the Persian Gulf during the time period of 1000 to 750 BC. There was a succession of Hindu and Buddhist states such as the Western Satraps, Satavahana dynasty, Gupta Empire, Chalukya dynasty, Rashtrakuta Empire, Pala Empire and Gurjara-Pratihara Empire as well as local dynasties such as the Maitrakas and then the Solankis.