They didn't rely on wind or oars to move them.
mechanical advantage
Efficiency of a machine or mechanical advantage
More mechanical advantage.
One advantage of a phyical model is that you can touch it.
ideal mechanical advantage
Steamships (APEX)
A decrease use of steamships (apex)
metal and stone
railroads and steamships
John Fitch
in 1794
Steamships
Steamships
People use steamships
Yes, it helped with the transportation
They shipped more cargo at greater speed and at lower cost.
Well... Cardboards out, and paper, paper derivatives, no string, or tape.