contributed to

contribute to (phrv)  =  นำมาซึ่ง,  เป็นสาเหตุของ

= conduce to

Seventy-five years ago, on the sixth of June, 1944, U.S. President Franklin D. Roosevelt addressed Americans by radio.

He spoke of “a mighty endeavor.” D-Day, we call it today — when U.S., British, Canadian and Free French forces launched the western front against Hitler’s forces in Europe and contributed to Nazi Germany’s final defeat 11 months later.