The French and Indian War was fought by French colonists allied with the Hurons Native Americans against the British colonists with their Iroquois Native American allies.
Basically:
French and Hurons vs. British and Iroquois
World War 2 started in 1939, when Nazi Germany invaded Poland
He expanded his empire by war. Invading and conquering other kingdoms.
Hope this helps. :)
Millions of people id say about 15 million