Answer:
Electricity and the light bulb. The electricity because thanks to the invention many people were able to communicate more and it was first used for so many other inventions on the way. The light bulb became VERY important and especially for everyday convenience since the invention around 1802..it is said that there's about 20 light bulb inventors (Thomas Edison was just credited). steam power and electricity as well.
Answer:
people used Natural resources to cook food, fuels and raw materials for the production of goods.
C. Seneca falls convention
I would maybe say electing donald trump but that would not be right. so I would say maybe the cold war because even thought they won they did spend alot of money fro pretty much nothing. hope this helps