I will go with religion because Religion to me have been the oldest of all the option given. It is the only thing that connect the world.
They used dry farming and flood irrigation.
Answer:
Explanation:
In the heat of the moment, watchmaker Jonathan Dillon unscrewed the dial from Lincoln's watch and engraved a message with a sharp tool. In 1906 at the age of 84, he recalled the message to the New York Times: The first gun is fired. Slavery is dead.
