A wheelbarrow.
For carrying loads of stuff.
Wheelbarrow.
a wheelbarrow.
A wain is a wagon, a four-wheeled cart for hauling loads.
A two wheeled cart was a chariot or a "currus" in Latin.
The correct spelling is wheelbarrow (a wheeled carrying cart).
mm
yes.
It's called a rickshaw
People observed that horses were good at carrying or pulling loads. People also observed that wheeled vehicles were efficient load carriers. People put the two together. Horses, of course, existed before humans.
It's called a sulkey.
Typically a horse drawn wheeled battle vehicle would be called a chariot or a battle wagon.