Dom Antonio de Noronha, with the title of Viceroy, was to be supreme from the coasts of Arabia to Ceylon, with his capital at Goa. This left him entire control of the Indian and Persian trade. Antonio Moniz Barreto was to govern from Bengal to the furthest East, with his headquarters at Malacca, and was charged with the control of the spice trade. Francisco Barreto, the former Governor of India, was to rule all the Portuguese settlements on the South-East coast of Africa, with his capital at Mozambique.
Hitherto these African settlements had been regarded solely as stopping-places for the fleets to and from India. But King Sebastian wished to use them also as the basis for exploration and conquest in the interior of Africa. This is not a history of the Portuguese in Africa, but it may be remarked that much important and interesting work was done by the Portuguese in that continent during the sixteenth century which seems to be forgotten by writers on the opening up of Africa at the present time. Francisco Barreto, for instance, made his way far into the interior and conquered the kingdom and city of Monomotapa, where he died.
Dom Antonio de Noronha handed over the government of India in 1573 to Antonio Moniz Barreto. Ruy Lourenço de Tavora, who was nominated to succeed as Viceroy, died on his way out, and Dom Diogo de Menezes, the defender of Chalé, administered the government from 1576 to 1578. He was superseded by Dom Luis de Athaide, who at the special request of King Sebastian consented once more to return to India. Athaide's second viceroyalty was not marked by any important event. He died at Goa on March 10, 1581; it is said from a broken heart caused by the news of the defeat of the King Sebastian and of his melancholy death at Alcacer Quibir (El-Kasr Kebir) in Morocco.
With the death of Dom Luis de Athaide this rapid sketch of the successors of Albuquerque must end: he was the last great Portuguese ruler in the East, and none of the Viceroys who succeeded him deserve separate notice. The commercial monopoly of Portugal lasted some years longer, but the fabric of the Portuguese power in India was utterly rotten, and gave way with hardly a struggle before the first assaults of the Dutch merchant-adventurers.
The causes of the rapid fall of Portuguese influence in Asia are as interesting to examine as the causes of their rapid success, and, like the latter, they may be classed under external and internal headings. The chief external cause was the union of the Portuguese crown with that of Spain in 1580. Philip II kept the promise he made to the Cortes of Thomar, and appointed none but Portuguese to offices in Portuguese Asia. His accession to the throne was everywhere recognised in the East, and the Prior of Crato who opposed him found no adherents there. The first Viceroy whom Philip nominated, Dom Francisco Mascarenhas, bore a name famous in Portugal, and had no difficulty in persuading the various captains of fortresses to swear fealty to the Spanish king. It is curious to note among the Viceroys whom Philip II nominated to Goa two relations of the most famous Portuguese conquerors in the East, Mathias de Albuquerque and Dom Francisco da Gama, grandson of the navigator. In spite of Philip's loyalty in this respect, the fact that he was King of Portugal involved that country in war with the Dutch and the English. The merchants of Amsterdam and London were forbidden to come to Lisbon for Asiatic commodities, and they consequently resolved to go to the East and get them for themselves. In 1595 the first Dutch fleet doubled the Cape of Good Hope, and in 1601 it was followed by the first English fleet, both being despatched by trading companies. The Portuguese endeavoured to expel the intruders, but they signally failed.
The reasons for this failure are to be found in the internal causes of the Portuguese decline. The union with Spain brought their rivals into the Eastern seas, but it was their own weakness which let those rivals triumph. The primary cause of that weakness was the complete exhaustion of the Portuguese nation. Year after year this little country, which never exceeded 3,000,000 in population, sent forth fleets to the East, carrying sometimes as many as 3000 and 4000 soldiers. Of these men few ever returned to Europe. Many perished in battle, in shipwreck, or from the climate, and those who survived were encouraged to settle down and marry native women. During the whole of the sixteenth century Portugal was being drained of men, and those the strongest and bravest of her sons. In return she got plenty of wealth, but money cannot take the place of brain and muscle. Besides becoming exhausted in quantity, the Portuguese in the East rapidly degenerated in quality. It was not only that Albuquerque's successors in supreme command were his inferiors; some of them proved worthy of their office; but the soldiers and sailors and officials showed a lamentable falling off. Brilliant courage was shown up to the siege of Goa in 1570. After that time it is difficult to recognise the heroic Portuguese of Albuquerque's campaigns. Albuquerque's imperial notions were set aside as impracticable, and interest in commerce and in Christian missions took the place of vast schemes of conquest and of empire.
The later history of the Portuguese in Asia may be summed up in a rapid record of their disasters. In 1603 and 1639 the Dutch blockaded Goa. In 1656 they drove the Portuguese from Cannanore; in 1661 from Negapatam and Káyenkolam, the port of Quilon; in 1663 from Cranganore and Cochin. Nor were the Dutch victories confined to India; in 1619 they founded Batavia in the island of Java, and in 1640 they took Malacca and concentrated the whole trade of the Spice Islands at their new settlement. The Dutch were equally successful in Ceylon, which they completely controlled after the capture of Jaffnapatam in 1658. The English were but little later in the field: in 1611 Sir Henry Middleton defeated the Portuguese off Cambay, and in 1615 Captain Best won a great victory over the Portuguese fleet off Swally, the port of Surat. The Dutch and English agencies quickly covered the East, and soon after the middle of the seventeenth century the Asiatic trade of Portugal had practically disappeared. What little commerce survived was in the hands of the Jesuits, and became finally extinct on the suppression of that body by the Marquis of Pombal in 1742.
It was not only by European competitors that the Portuguese power in the East was shattered. It was the Emperor Sháh Jahán who took Húglí in 1629, after an obstinate resistance, and carried away 1000 Portuguese prisoners; and it was Abbas Sháh of Persia, who, with the assistance of some Englishmen, captured Ormuz in 1622. In 1670 a small band of Arabs from Muscat plundered Diu, the fortress which, under Silveira and Mascarenhas, had resisted the utmost power of great Muhammadan fleets and armies.
The Maráthá confederacy also found it easy and profitable to plunder Portuguese settlements in India. In 1739 these hardy Hindu soldiers sacked Bassein, and they extended their incursions to the very walls of Goa. In the eighteenth century a vigorous effort was made by the Portuguese to hold their own with the Maráthás, which met with some success, and led to a considerable increase of the province of Goa. Lastly, it must not be forgotten that in 1661 the Portuguese ceded the island of Bombay to England as part of the dowry of Catherine of Braganza.
The present condition of the Portuguese in India affords a curious commentary on the high aims and great successes of Albuquerque. The remaining Portuguese possessions, Goa, Damán, and Diu could make no pretence of defending themselves against the English Empire in India. They are maintained by Portugal, not for any benefits to be derived from them, but as relics of the past and witnesses to former glory. The condition of the Portuguese is indicated by the treaty which was signed in 1878 with the British Government, by which the right of making salt and the customs duties were ceded to the Government of India for a yearly payment of four lakhs of rupees. This sum was hypothecated for the construction of a railway to Marmagáo, near Goa, which possesses a fine harbour, and will probably increase in wealth as the port of export for the cotton grown in Bellary and the neighbouring British districts.