Final answer:
After the Battle of Five Armies, Erebor remained under the control of the Dwarves.
Step-by-step explanation:
After the Battle of Five Armies, Erebor, the Lonely Mountain, remained under the control of the Dwarves. Although many of their warriors were killed, they managed to drive back the enemy and protect their homeland. The battle took place near the Smaug's lair and was fought primarily between the Dwarves, Elves, and Men.