(You know the 19th century has been over for 112 years, right?)<br />
High quality, highly exact machine tools were the best inventions of the 1800s. They made so many other things possible.
As the daughter of a machinist....I can't help but agree.
That is awesome. Tell your dad thanks.
There were very many.I will pick photography,from the mid-part of the 19th Century,and moving pictures from the final decade.
Abraham Lincoln ;)<br />
And the best invention of 20th century is Me! ;)<br />
Thanks to my parents!
cotton gin and the telegraph.