The Steam engine changed the 1800s dramatically. The reason it changed the way products were moved across the country and helped get people to the westward expansion.
Goods were transferred with steam boat instead of man or animal.
The steam engine introduced many amazing things such as the rail road.
Right when the steam engine was made it made travel so much faster and shipping even easier. You could go on boat or train on the steam engine, getting shipping there anywhere within in months helping economy.