They used bronze, rocks, copper and additional metal.
A likely explanation would be that there was not enough food available for the entire growing civilization at the time, and that the people of the civilzation moved around and were eventually dissolved into different cultures,
To have some fun and not be bored all the time
They had a very bad agreement that's for sure
<span>Losing thrust in both engines but still managing to land an airliner full of people in the Hudson River without the loss of a single life is plenty dramatic. But the drama in Sully, the movie about the 'Miracle on the Hudson' ditching of US Airways Flight 1549 , doesn't stop there. </span>
