What was D-Day, what was America’s involvement and how did it change the course of World War II in Europe?

Explanation:

The D-Day invasion took years of planning, and, in months leading up to it, the Allies began a military deception strategy known as Operation Bodyguard. This operation was intended to mislead German forces as to the exact day and location of the suspected invasion.

Those planning the invasion determined specific weather conditions based on moon phases, time of day, and ocean tides that would be most ideal for a successful invasion. When the appointed time of the invasion came, the weather was far from these conditions, and the invasion was pushed back a day

On the morning of D-Day, paratroopers and glider troops were sent behind enemy lines by the thousands to secure bridges and exit roads. Then, at 6:30 in the morning, the beach landings began. By the end of the day, over 150,000 Allied troops had successfully stormed and captured Normandy’s beaches—but at a high price. By some estimates, over 4,000 of the Allied forces lost their lives. Thousands more were recorded as wounded or missing.

i really do want to but i just don't know it i'm so sorry : (