I'd say it's a tossup between the automobile and the internet. The revolver and railroads are somewhere up there too. ------------ Railroads are not the "invention", but the "steam engine" greatly affected the historic development of US industry and commerce. "Electric lighting" would rank highly as well. Internal combustion engines and computers are the modern equivalents. The telegraph, telephone, and the skyscraper all had their impacts. (There are millions of people around the world who have no day-to-day experience with any of these inventions.)
_There should be a space between 'the' and 'impact' it should read: "What was the impact of World War 2 on US society?" Soz!_
television
barbed wire
Amelia Earhart was either one of the greatest or THEgreatest female pilot ever known to the US and other countries.
cuz he invented a invention somthing none of us could do
the nile river...
The greatest invention ever built by mankind was probably the electric wire system that allowed us to invent further technology like computers.
== == it had the greatist impact on cuba and some of the us!!
One of the most life changing invention is the internet, It provides us with information in an instant.
_There should be a space between 'the' and 'impact' it should read: "What was the impact of World War 2 on US society?" Soz!_
The greatest impact of US expansion to the West was not a new invention. What was new was a vast network of railway extensions including the 1869 completion of the Transcontinental Railway. The US railway network allowed for faster and safer travel to the West. Settlers wishing to take advantage of the Federal Government's land policies gave citizens a chance to start a new life in the West. Travel now was not limited to wagon trains which were slow and dangerous adventures.
It had a big impact on society. It helps us keep many things together/closed.
waning support for the war in the US
television
The 10th amendment.
television
Decreaed incidence of congenital abnormalities