Transportation.
Carbon dioxide.
Quicker easier travel.
Copper axes, chisels, awls, and knife blades have been discovered in several settlements by archaeologists. Copper has been suggested for sickles, blades, chains, clamps, hammers, and axe heads in other places. Saws, goads, awls, axes, and daggers were all made of tin.
It was Bolsheviks (I am not sure if I remember correctly but it should mean something like "majority" but I am not 100% sure).
It was the idea of wanting to have the individual states be more powerful than the federal government that guided the development of the articles of confederation, which is why they later proved to be inadequate and were replaced with the Constitution.
