What event happened right before the main invasion

Event was named as D-Day landings

Explanation:

D-Day Landings: June 6, 1944.However, by day 'send, roughly 156,000 Allied troops had effectively raged Normandy's shorelines. As per a few appraisals, in excess of 4,000 Allied troops lost their lives in the D-Day intrusion, with thousands increasingly injured or missing.

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