Prior to the start of the hundred years of war who gained control of the channel of water between england and france ant the north sea

England.

Between the two nations, there had been much conflict over this channel, England being the one to hold control of it before hand.

Hope this helps!

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings