Complex sentence: Upon discovering Malaysia, he proceeded in 1511 to conquer Malacca, then commissioned an expedition under the command of António de Abreu and Vice-Commander Francisco Serrão (the latter being a cousin of Magellan) to further explore the extremities of the region in east Indonesia.
Split into simpler sentences: Upon discovering Malaysia, he proceeded in 1511 to conquer Malacca. Albuquerque then commissioned an expedition under the command of António de Abreu and Vice-Commander Francisco Serrão (the latter being a cousin of Magellan) to further explore the extremities of the region in east Indonesia.