Manga has its roots in historic japan. They have, for ages, kept their stories and such in story-telling scrolls of pictures that told the stories.
It didn't start coming around in the form it is today until after WWII, if I remember correctly.
i do not remember the date, but the very first manga was created way back in AD i will post up the manga and person who made it when i can...the most reconized first anime was the white dragon.