What is meant with D-day?

the main reason the us senate rejected the treaty of versailles was because "european nations wanted to punish germany"

d(:

me and mark as brainliest.

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.