Copper sheathing<span> is a practice of protecting a under-water hull of a ship or boat from the corrosive effects of salt water and bio fouling through the use of </span>copper<span> plates affixed to the outside of the hull.
It was pioneered and developed by the Royal Navy during the 18th century.
Hope this helps.</span>
Villages and towns were built around ubaid farming communities. They are known as Sumerians. They were in control of the area by 3000 B.C. Their culture was comprised of a group of city-states.
The statement about the Toltec that is true is : They shared common gods and religious belief with the Aztecs
Technically, the Toltec and the Aztecs never made a direct contact. But Toltec gained all of their information about gods and religious beliefs from the relics and documents left by Aztecs
hope this helps
A The Big Bang stated 10 billion years ago. And several billion of years before the other events. The Big Bang created the Universe.
