The phrase "was conquered from" is correct and usable in written English.
You can use it to describe a place, person, or group having been taken over by another place, person, or group. For example, "The town of X was conquered from the warring faction Y, until eventual peace was restored."
Israel says they are lawful because the Palestinians were not sovereign in the West Bank when it was conquered from Jordan in 1967.
The Gilo area was conquered from Jordan in the 1967 war, along with East Jerusalem and the West Bank, and Israel later annexed it to the city of Jerusalem, a step that has never been recognized internationally.
These areas included the Maltese Archipelago, which was conquered from the Arabs of the Emirates of Sicily; the Duchy of Apulia and the County of Sicily, which had belonged to his cousin William II, Duke of Apulia, until William's death in 1127; and the other Norman vassals.
Historically, Herat was part of a province, Khorasan, which has been conquered from the west and the east.
On Frederick Henry's recommendation, John Maurice was, in 1636, named kapitein-generaal (governor-general) of the Dutch colony in Brazil, which had recently been conquered from Portugal.
Israel said that 1,650 of the new housing units would be built in areas of Jerusalem that were conquered from Jordan in the 1967 war and later annexed, a move that was never recognized internationally.
It was that type of mukâṭaʿa that developed into the Ottoman form of fief, the timar, which was the basis of Ottoman military and administrative organization as the European portions of the empire were conquered from the vassals in the 15th century and placed under direct Ottoman administration.
Better equipped than the forces loyal to the President, they rapidly captured Chile's northern provinces, which had recently been conquered from Bolivia and Peru during the War of the Pacific.
The agreement, by which Raymond swore homage to John, was explicitly based on the Treaty of Devol, but went beyond it: Raymond, who was recognized as an imperial vassal for Antioch, promised the Emperor free entry to Antioch, and undertook to hand over the city in return for investiture with Aleppo, Shaizar, Homs and Hama as soon as these were conquered from the Muslims.
From 1795 to 1809 Santo Domingo was under French domination, and then, after another brief Spanish period, it was conquered by invaders from Haiti, its neighbour to the west on Hispaniola.
The apartments are supposed to be constructed in Ramat Shlomo, an ultra-Orthodox neighborhood in East Jerusalem in territory that was conquered by Israel from Jordan in the 1967 war.
