Incursion into the East Indies: Batavia challenges Goa
The Portuguese relied on four strategic bases in the East Indies: Goa, Hormuz, Malacca, and Macau. The first served as the seat of Portuguese viceroys, head of all Portuguese possessions east of the Cape of Good Hope and connected India with Portugal proper; Hormuz was a Portuguese protectorate, and the keystone of the Persian Gulf trade between Persia, Arabia, Mesopotamia, and the rest of Asia and Africa. Malacca connected Goa to the Indian Ocean trade via Cape Comorin and Ceylon; and Macau was the hub for the trade routes stretching from the South China Sea to the Sea of Japan and to the Spice Islands, east of New Guinea in Melanesia. The other locations were important but not crucial: including Diu along with Bombay (until the English acquisition). These Indian cities controlled the approaches to the smaller Gulf of Cambay and to the larger Arabian Sea as well.
If both Diu and Hormuz would fall, that would prevent the West Asian markets from being taxed by Portugal, which would deny Lisbon the revenue from the southernmost course of the silk route. It was a lucrative trade but not as essential to the Indian Ocean spice trade network at large.
However, the VOC suffered from the same weakness as Portugal: lack of manpower. Thus, a Spanish-style colonization effort was never feasible and only dominion of the seas would allow it to compete. The Portuguese had a century head start in the region and their empire allowed them access to converted and loyal local populations, which shored up inland, what naval power could not ensure at sea. Hence, the Dutch directed their efforts to the periphery of the Portuguese Empire. Avoiding the Indian coasts, they set up their own headquarters in Southeast Asia, in the city of Batavia (modern-day Jakarta). This put them safely distant from Goa but opportunistically close to Malacca and the sea lanes connecting the Pacific and Indian Oceans. Many battles were fought but the most decisive ones fatally injured the Portuguese Indian empire. The Dutch blockade of Goa between 1604 and 1645 deprived Portuguese India from a safe connection to Lisbon – and Europe – for the remainder of the war.
In 1615, a battle off the coast of Malacca destroyed Portuguese naval power in Southeast Asia. The Portuguese lost their naval supremacy to the Dutch in the crucial route between Goa and Macau. The sieges of Qeshm and Hormuz by the combined forces of Persia and England have largely dislodged the Portuguese from West Asia. The 1639 expulsion of the Jesuits (sakoku) and subsequently the Portuguese, from Nagasaki, also doomed the economic viability of Macau. The siege of Malacca of 1641, after many attempts, delivered the city to the Dutch and their regional allies (including the Sultanate of Johor), crucially breaking the spinal cord between Goa and the Orient.[7]
Portuguese establishments were isolated and prone to being picked off one by one, but nevertheless the Dutch only enjoyed mixed success in doing so.[9] Amboina was captured from the Portuguese in 1605, but an attack on Malacca, the Battle of Cape Rachado, the following year narrowly failed in its objective to provide a more strategically located base in the East Indies with favorable monsoon winds.[10] In 1607 and 1608, the Dutch twice failed to subdue the Portuguese stronghold on the Island of Mozambique, due to the close cooperation between the locals and the Portuguese.
The Dutch found what they were looking for in Batavia, conquered by Jan Pieterszoon Coen in 1619. The city would become the capital of the Dutch East Indies.
For the next forty-four years, the two cities of Goa and Batavia would fight relentlessly, since they stood as the capital of Portuguese India and the VOC's base of operations. With the assistance of the Sultanate of Bijapur the Dutch would even attempt to conquer Goa itself, but Portuguese diplomacy defeated this plan.
In fact, Goa had been under intermittent blockade since 1603. Most of the fighting took place in west India, where the Dutch campaign in Malabar sought to replace the Portuguese monopoly on the spice trade. Dutch and Portuguese fleets faced off for control of the sea lanes as was the case with the action of 30 September 1639, while on mainland India the war involved more and more Indian kingdoms and principalities as the Dutch capitalized on local resentment of Portuguese conquests in the early 16th century.
After the fall of Qeshm and Hormuz to the Persians and English, the Portuguese struck out of their Muscat and Goa bases, which led to a destructive campaign against Persia's coastline and an alliance with Ottoman Basra. Eventually, after a naval battle off Hormuz in 1625, Persia vied for a cease-fire with the Portuguese to be able to reestablish trade and provided Portugal with a trading post in Kong. Together with the reestablished Basra route, this temporarily made up for the loss of Hormuz. The pioneers of the destruction of the Portuguese and Spanish mare clausum doctrine were the Dutch in portions of the East Indies.
In 1624, Fernándo de Silva led a Spanish fleet to sack a Dutch ship near the Siamese shoreline. This enraged King Songtham of Siam, who held the Dutch in great preference and ordered attacks on the Spaniards.[11]
War between Philip's possessions and other countries led to a deterioration of the Portuguese Empire, as the loss of Hormuz to Persia, aided by England, but the Dutch Republic was the main beneficiary.
In 1640, the Portuguese took advantage of the Catalan Revolt and themselves revolted from the Spanish-dominated Iberian Union. From this point onward, the English decided instead to re-establish their alliance with Portugal.
VOC gains ground
Despite Portugal being at war with Spain, the VOC nevertheless continued attacking Portuguese fortresses in the East Indies. Malacca finally succumbed in 1641.
Important battles also took place in the South China Sea. Combined fleets of Dutch and English vessels, and subsequently exclusively Dutch ships, attacked Macau from which Portugal monopolized the lucrative China–Japan trade. The Dutch failed in four attempts to capture Macau.
The Dutch also tried to force China to accept them in place of Portugal as trading partner with a trading post in the Pescadores. These attempts failed, in part because of the long-standing diplomatic ties between Portugal and the ruling Ming dynasty.
The Dutch were ultimately successful in acquiring the monopoly of trade with Japan. [13]
The Dutch also colonized Taiwan, known to the Portuguese as Formosa. The Dutch established a colony at Tayouan in 1624, and founded present-day Anping in the south. In 1642 the Dutch took northern Formosa from Spain.
The Dutch intervened in the Sinhalese–Portuguese War