Throughout United States history, many Americans have attempted
to better their lives through science and early inventions such
as the cotton gin, to personal computer revolution of today,
science and technology has had a fundamental impact on the way
people live. Different periods in U.S. history have been marked
by important discoveries in science and technology. These
include the early Republic marked by increasing
industrialization, the Industrial Revolution, which build great
cities and and gave the middle class greater power, and the
modern era that has created every comfort a person could want,
and allowed us to walk on the Moon. Each phase of development
changed the country in many This site is designed to aid
students in reviewing major periods of scientific and
technological advancement in United States history. This site
should be used in preparation for the New York State Regents
Exam in United States History and Government. In addition,
students may test their knowledge of the material presented