Final answer:
The New Kingdom is mostly remembered for massive war and expansion, with Egyptian pharaohs reuniting Upper and Lower Egypt and embarking on expansionist conquests that led to the flourishing of trade and advancements in the arts.
Step-by-step explanation:
The New Kingdom is mostly remembered for C. Massive war and expansion. During this period, Egyptian pharaohs reigned over a reunited Upper and Lower Egypt after two centuries of foreign rule. They pursued expansionist conquests, leading to the flourishing of trade and significant advancements in the arts.