people
used nitrrous oxide for dental work
horace wells
the steel plow was designed by
john deere
the city that was made a major commercial port with help of the steamboat was
new orleans
the location of the transatlantic cable was chosen by who?
matthew maury
invented the telegraph
samuel f b morse
opened the erie canal
dewitt clinton
a person who risks personal loss to develop and market new products or ideas is an
entrepreneur
improved the power loom
francis cabot lowell
developed a reaping machine
cyrus mccormick
the first female physician in the US was
elizabeth blackwell