the allies' foothold in europe was made possible by the successful invasion at

The correct answer is Normandy France.

Explanation:

On June 6th 1944, the Allied forces faught against the Axis power in the Battle called Operation Overload, this would later lead to further successes.

on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.

there is no photo, therefore i can not answer your question.