tried to use military force to make Ming China open up to Dutch trade but the Chinese defeated the Dutch in a war over the Penghu islands from 1623 to 1624, forcing the VOC to abandon Penghu for Taiwan. Then Chinese defeated the Dutch again at the Battle of Liaoluo Bay in 1633. In 1646, the Dutch tried to capture the Spanish colony in the Philippines. Although they had a large force at their disposal, they were defeated at the Battles of La Naval de Manila when they attempted to take Manila. After this defeat, they abandoned their efforts to capture Manila and the Philippines. Between 1602 and 1796, the VOC sent almost a million Europeans to work in the Asia trade. The majority died of disease or made their way back to Europe, but some of them made the Indies their new home. Interaction between the Dutch and native population mainly took place in Sri Lanka and the modern Indonesian Islands. Through the centuries there developed a relatively large Dutch-speaking population of mixed Dutch and Indonesian descent, known as Indos or Dutch-Indonesians. Americas In the Atlantic, the West India Company concentrated on wresting from Portugal its grip on the sugar and slave trade, and on opportunistic attacks on the Spanish treasure fleets on their homeward bound voyage. Bahia on the north east coast of Brazil was captured in 1624 but only held for a year before it was recaptured by a joint Spanish-Portuguese expedition. In 1628, Piet Heyn captured the entire Spanish treasure fleet, and made off with a vast fortune in precious metals and goods that enabled the Company two years later to pay its shareholders a cash dividend of 70%, though the Company was to have relatively few other successes against the Spanish. In 1630, the Dutch occupied the Portuguese sugar-settlement of Pernambuco and over the next few years pushed inland, annexing the sugar plantations that surrounded it. In order to supply the plantations with the manpower they required, a successful expedition was launched from Brazil to capture the Portuguese slaving post of Elmina in 1637, and successfully captured the Portuguese settlements in Angola in 1641. In 1642, the Dutch captured the Portuguese possession of Axim in Africa. By 1650, the West India Company was firmly in control of both the sugar and slave trades, and had occupied the Caribbean islands of Sint Maarten, Curaçao, Aruba, and