1844 (1 dic 1844 año – 1 abr 1845 año)
Descripción:
Charles Goodyear obtained a patent to develop a method to treat rubber to make it stronger. This was a continuity because inventors were already working on a way to advance the economy.
Añadido al timeline:
fecha:
1 dic 1844 año
1 abr 1845 año
~ 4 months