Around 6 million Jewish people were killed, and to compare the amount of kiling in war today would be very different from war in the past. mainly because there hasn't been a recent genocide.
Answer:
Invade the beaches of normandy
Explanation:
June 6th 1944 an order of the day was sent by Supreme Commander of the Allied Expeditionary Force General Dwight D. Eisenhower.
They didn't have the military power to defend themselves.
The answer to that would be Maya and Egypt. I hope this helped. If it did, ask me more questions and I will be sure to answer them! :)