The Colt Revolver, Winchester Rifle, the Sharps Rifle and Barbed wire.
Probably the Internet
In my personal and humble opinion, I believe that the printing press had the greatest impact on society. Before its invention, the common-folk of the world could not read or write, but after it was created everyone was able to learn how to read and eventually write, because books became cheap and affordable for all.
There were no turnpikes in the 1800's. The routes taken were wagon paths and no roads will go across the country until the hi way systems were begun in 1950.
The invention of an efficient steam engine, meant that factories and mills no longer had to be built along water-courses, or where lodges could be used as reservoirs, to drive water-wheels.
The westward expansion of the United States offers valuable lessons about the complexities of growth and development, including the impact of colonization on indigenous populations and the environmental consequences of rapid industrialization. It illustrates the tension between manifest destiny and the ethical implications of displacing communities. Additionally, it highlights the importance of infrastructure, such as railroads and telegraph lines, in shaping economic opportunities and national unity. Overall, it serves as a reminder of the multifaceted nature of progress and the need to consider social justice in expansion efforts.
electrisity
television
Cotton had a major impact on slavery especially after Eli Whitney invented the Cotton Gin. As to Westward expansion farmers bought land in Alabama and Mississippi on which to farm cotton.
Probably the Internet
The telegraph
weapons
idkit never said .
It effected slavery's westward expansion because slavery would'nt be loyal in any territoy North.
It facilitated US westward expansion -- that was it's main purpose. It allowed white US citizens and immigrants to spread into and take land held by Native Americans.
The iron and steel versions of The Jefferson Plow could turn the soil and make farming not only possible but much easier as the American frontier moved westward. On the same type of land where Latin Americans built Haciendas and kept cattle using the Landfundia approach, Americans built farms. The plow made the difference possible.
Colonists were upset that the king would restrict their expansion westward.
It is subjective to determine the greatest invention as it depends on individual perspectives and needs. Some may argue that the internet is the greatest invention due to its vast impact on communication and access to information, while others may consider inventions like electricity or the wheel to be the greatest for their foundational role in shaping civilization.