While the drive-thru window might seem like a pretty modern culinary invention, its roots may actually reach back much, much further than you'd expect.
Flooding meant that crops weren't growing as well. Cities began to struggle. In the end, Sumer was invaded by the Elamites who came from modern-day Iran. Narrator: Hello, future people of the UK.
Narrator: Hello, future people of the UK. Would you like to visit me at the dawn of civilisation in ancient Sumer? Well, to do that, you’ve got to travel back in time. Back before the Vikings ...