The D-Day operation of June 6, 1944 brought together the land, air and sea forces of the allied armies in what became known as the largest invasion force in human history. The operation, given the codename OVERLORD, delivered five naval assault divisions to the beaches of Normandy, France. Hope this helped :)
I think that the answer is The west's natural resources gave settlers the chance to make money, It might be, Going west gave settlers a chance to improve their own lives also but I don't know......
