MITHRADATIC WARS
88 BC - 63 BC

Mithradates VI Eupator struggled with the Romans because both parties desired to dominate Asia Minor, which is today's Asian part of Turkey.

These conflicts resulted in the First Mithradatic War, 88 B.C. - 84 B.C. Mithradates lost and had to give up all territorial claims except that of Pontus and a few other protectorates.

The Romans got greedy and started the Second Mithradatic War,  83 B.C. - 81 B.C. Mithradates was able to defend himself and a peace was concluded.

When Rome was fixing to take possession of Bithynia, Mithradates started the Third Mithradatic War, 74 B.C. - 63 B.C. Mithradates lost again and had to flee to the Crimea, his last stronghold, where he was killed by a slave.

Julius Caesar fought in the Third Mithradatic War.

And here is the map

ASIA MINOR BEFORE THE MITHRADATIC WARS
Click map to enlarge