The Romans adapted gods and myths of which other ancient culture into their religion?

Greek

Explanation:

The Romans borrowed and adapted ideas from the Greeks as well as the Etruscans. Greek architecture was one important influence on the Romans. The Romans also looked for common ground between their major gods and those of the Greeks (interpretatio graeca), adapting Greek myths and iconography for Latin literature and Roman art, as the Etruscans had. Etruscan religion was also a major influence, particularly on the practice of augury.

i believe it was spain