Portuguese conquest of Goa in the context of Daman, India

Goa (/ˈɡoʊ.ə/ GOH-ə; Konkani: [ɡõːj]; Portuguese: [ˈɡoɐ] ) is a state on the southwestern coast of India within the Konkan region, geographically separated from the Deccan highlands by the Western Ghats. It is bordered by the Indian states of Maharashtra to the north and Karnataka to the east and south, with the Arabian Sea forming its western coastline. It is India's smallest state by area and fourth-smallest by population. Panaji (also Panjim) is the state's capital, while Vasco da Gama is its largest city by population. The state's official language is Konkani, spoken by the majority of its inhabitants.

The Portuguese, who first voyaged to the subcontinent in the early 16th century as merchants, conquered it shortly thereafter. Goa became an overseas territory of the Portuguese Empire and part of what was then known as Portuguese India, remaining under Portuguese rule for approximately 451 years until its annexation by India in December 1961. The historic city of Margão, or Madgaon, still reflects the cultural legacy of colonisation.

The State of India, also known as the Portuguese State of India or Portuguese India, was a state of the Portuguese Empire founded seven years after the discovery of the sea route to the Indian subcontinent by Vasco da Gama, a subject of the Kingdom of Portugal. The capital of Portuguese India served as the governing centre of a string of military forts and maritime ports scattered along the coasts of the Indian Ocean.

Francisco de Almeida, the first viceroy, established his base of operations at Fort Manuel in the Malabar region, after the Kingdom of Cochin negotiated to become a protectorate of Portugal in 1505. With the Portuguese conquest of Goa from the Bijapur Sultanate in 1510, Goa became the major anchorage for the Armadas arriving in India. The capital of the viceroyalty was transferred from Cochin to Goa in 1530. From 1535, Mumbai (Bombay) was a harbour of Portuguese India, known as Bom Bahia, until it was handed over to Charles II of England in 1661 as part of the dowry of Catherine de Braganza. The expression "State of India" began regularly appearing in documents in the mid-16th century.

The Capture of Malacca in 1511 occurred when the governor of Portuguese India Afonso de Albuquerque conquered the city of Malacca in 1511.

The port city of Malacca controlled the narrow, strategic Strait of Malacca, through which all seagoing trade between China and India was concentrated. The capture of Malacca was the result of a plan by King Manuel I of Portugal, who since 1505 had intended to beat the Castilians to the Far-East, and Albuquerque's own project of establishing firm foundations for Portuguese India, alongside Hormuz, Goa and Aden, to ultimately control trade and thwart Muslim shipping in the Indian Ocean.

Tiswadi, formerly known as Ilhas, is a taluka in the district of North Goa, situated in the Indian coastal state of Goa. It is an estuarine island situated on the confluence of the Mandovi and Zuari rivers. It was one of the first territories to be annexed by the Portuguese in the 16th century. Both the state capital Panaji, and the erstwhile capital Old Goa lie within the sub-district. It is the biggest and the most populated of the six major islands between the Mandovi and Zuari rivers.

Old Goa (Konkani: Pornnem Gõy; Adlem Gõy; Portuguese: Velha Goa, lit. ''Old Goa'') is a historical site and city situated on the southern banks of the River Mandovi, within the Tiswadi taluka (Ilhas) of North Goa district, in the Indian state of Goa.

The city was established by the Bijapur Sultanate in the 15th century AD. After the Portuguese conquest of Goa, it served as capital of Portuguese Indian possessions, such as Mumbai/Bombay (Bom Bahia) territory and the state of Kochi/Cochin (Cochim), until its abandonment in the 18th century AD due to a plague. Under Portuguese rule, it is said to have been a city of nearly 200,000 people, from whence the spice trade was carried out across the Portuguese East Indies. The deserted city, containing churches and convents of outstanding architectural and religious importance, has been declared a World Heritage Site by the UNESCO. Old Goa is approximately 10 kilometres (6.2 miles) east of the current state capital of Panjim (Portuguese: Nova Goa, lit. ''New Goa'').