Latin Christian in the context of "Patriarch of the West"

The Fourth Crusade (1202–1204) was a Latin Christian armed expedition called by Pope Innocent III. The stated intent of the expedition was to recapture the Muslim-controlled city of Jerusalem, by first defeating the powerful Egyptian Ayyubid Sultanate. However, a sequence of economic and political events culminated in the Crusader army's 1202 siege of Zara and the 1204 sack of Constantinople, rather than the conquest of Egypt as originally planned. This led to the partition of the Byzantine Empire by the Crusaders and their Venetian allies, leading to a period known as the Frankokratia ("Rule of the Franks" in Greek).

In 1201, the Republic of Venice contracted with the Crusader leaders to build a dedicated fleet to transport their invasion force. However, the leaders greatly overestimated the number of soldiers who would embark from Venice, since many sailed from other ports, and the army that appeared could not pay the contracted price. In lieu of payment, the Venetian Doge Enrico Dandolo proposed that the Crusaders back him in attacking the rebellious city of Zara (Zadar) on the eastern Adriatic coast. This led in November 1202 to the siege and sack of Zara, the first attack against a Catholic city by a Catholic Crusader army, despite Pope Innocent III's calls for the Crusaders not to attack fellow Christians. The city was then brought under Venetian control. When the Pope heard of this, he temporarily excommunicated the Crusader army.

Averroism, also known as Rushdism, was a school of medieval philosophy based on the application of the works of 12th-century Andalusian philosopher Averroes, (Ibn Rushd in Arabic; 1126–1198) a commentator on Aristotle, in 13th-century Latin Christian scholasticism and Islamic Golden Age.

Latin translations of Averroes' work became widely available at the universities which were springing up in Western Europe in the 13th century, and were received by scholasticists such as Siger of Brabant and Boetius of Dacia, who examined Christian doctrines through reasoning and intellectual analysis.

Bombay, also called Bom Bahia or Bom Baim in Indo-Portuguese creole, and Mumbai in the local language; is the financial and commercial capital of India and one of the most populous cities in the world. It's also the cosmopolitan city centre of the Greater Bombay Metropolitan Area, and the cultural base of the Bollywood film industry. At the time of the arrival of the Portuguese Armadas, Bombay was an archipelago of seven islands. Between the third century BCE and 1348, the islands came under the control of successive Hindu dynasties. The Delhi Sultanate had been ruling the area, along with Chaul, New Bombay, (Thana), and Damaon; with the local administration at Bassein (Vasai) since the raids of Malik Kafur in the Konkan region and across the Indian subcontinent. This territory in North Konkan, along with the Bombay islands were later taken over by the Sultan of Guzerat from 1391 to 1534, when he had declared the end of the his suzerainty to Delhi, after the Timurid invasion of it. Growing apprehensive of the power of the Moghal emperor Humayun, Sultan Bahadur Shah of Gujarat was obliged to sign the Treaty of Bassein on 23 December 1534; according to which, the Seven Islands of Bombay, Fort San Sebastian of Bassein in the strategic town of Bassein (Vasai), and its dependencies were offered to the Portuguese East Indies. The places were only later officially surrendered on 25 October 1535, by the Sultan of Guzerat.

The Portuguese in Goa-Anjediva and Bombay-Bassein were actively involved in the foundation and growth of their Latin Christian religion in Bombay and the neighbouring area. They called the island by various names, which finally took the written form Bom Baim, when the islands were leased to several Portuguese officers during their regime. Portuguese Franciscans and Jesuits built several churches in and around Bombay (Mumbai); the prominent ones are the St. Michael's Church at Mahim, St. John the Baptist Church at Andheri, St. Andrew's Church, the Basilica of Mount Bandra (Bombay) at Bandra, the Gloria Church at Byculla, & the Holy Spirit Church Nandakhal at Virar. The Portuguese also built several fortifications around the city, like the Bombay Castle, Castella de Aguada (Castelo da Aguada or Bandra Fort) and Madh Fort.