Indian Ocean trade Madagascar at this time leaving behind a lasting cultural and genetic legacy. Chinese fleets under Zheng He criscrossed the Indian Ocean during the early part of the 15th century. The missions were diplomatic rather than commercial, but many exchanges of gift and produces were made. The Portuguese under Vasco da Gama discovered a naval route to the Indian Ocean through the southern tip of Africa in 1497–98. Initially, the Portuguese were mainly active in Calicut, but the northern region of Gujarat was even more important for trade, and an essential intermediary in east-west trade. Venetian interests were directly threatened as
East Timorese Portuguese the most commonly used form, known as "Tetun-Prasa" used in Dili, was heavily influenced by Portuguese. Following the Carnation Revolution in Portugal in 1974, political parties emerged in Portuguese Timor for the first time, all of which supported the continued use of Portuguese, including APODETI, the only party to advocate integration with Indonesia, which stated that it would support the right to "enjoy the Portuguese language" alongside Indonesian. On December 7, 1975, nine days after declaring independence from Portugal, Timor-Leste was invaded by Indonesia, which declared the territory as its 27th province in 1976, with Indonesian as the sole official