Wiktionary
preconquest
a. Prior to conquest.
Usage examples of "preconquest".
Ramirez, nephew of the last preconquest planetary president and the last uniformed commander of the San Martin Space Navy.
One hundred billion is an unreasonably high figure--probably outrageously inflated--but even so--Subtract these casualties from the preconquest population of Coruscant.
Aztecs dominated the heart of preconquest New Spain from Tenochtitlan, there were not only striking differences between the indio cultures but great hatred.
An unusual tale came to mind, one of the those preconquest stories I have heard waiting for Mateo outside cantinas.