Was the twentieth century a century of holocaust?

After the internal wars and expansion of the 19th century, US industrialism peaked during World War 2 and expanded to become the dominant economic force in the world.

Because if you add up all the people killed in wars in that century alone, it beats out all the other years combined.

they are both even they are both even

1900-2000

betwee 1939-1945, so 20th cenury or nineteen hundreds.