The operation overlord invasion is also known as
a. d-day.
b. barbarossa.
c. battle of berlin.
d. battle of rome.

The correct answer is A.

Operation Overlord was also known as D-Day.

During WWII (1939 - 1945 ) the battle of Normandy, which lasted from June 1944 to August 1944, resulted in the allied  liberation of Western Europe from Nazi Germany's control.

Codenamed Operation Overlord, the battle began on June 4 1944, a day that was also known as D-Day, when 156,000 American, British and Canadian Forces landed on five beaches along the heavily fortified coast of France's Normandy region. 

east-west schism. the greatest effect of the east-west schism was the creation of two separate churches that had previously been unified under one church, the eastern orthodox church and the roman catholic church.

answer; /// i do believe that the correct answer is (a); a farming tribe that settled primarily along the mississippi and arkansas rivers;