Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: Origins Initially a part of Urartu, Sophene became a province of the newly emerged ancient Armenian Kingdom of Orontids around 600 BC.

Sophene became a province of the newly emerged ancient Armenian Kingdom of Orontids. This happened around 600 BC. It was part of Urartu before then.