They really didn't until the 1800's after Jefferson bought the Louisiana purchase. When Clark published his book on the trip across the new territories people saw they could go beyond the regions they all ready had. There are people who seek a new life for one reason or other. With the Homestead act, the railroads, and gold rush people pushed west. The idea of Manifest Destiny push people west because the idea was God wanted them to take and use the land.
The Atlantic Ocean
The United States should one day stretch from the Atlantic Ocean to the Pacific Ocean. ~Apex
Manifest Destiny was the idea that Americans had the right to all the land from the Atlantic Ocean to the Pacific Ocean.
Manifest Destiny
Manifest Destiny
Manifest Destiny
Manifest destiny was the idea that the U.S. should stretch from the Atlantic Ocean to the Pacific Ocean.
The Pacific Ocean
The Panama Canal connects the Atlantic and Pacific Oceans.
The four ocean's of the earth are : * The Indian Ocean, * The Atlantic Ocean, * The Pacific Ocean, * The Arctic Ocean
The Atlantic and Pacific Ocean. (Apex)
Manifest Destiny