Where was the focus of u. s expansion before the late 1800s?

Before the U.S. expansion they focused on economic interests , military interests, and belief in cultural superiority  10 people found this useful. Americans had always sought to expand the size of their nation, before the late 1800`s they extended their control toward the pacific coast.  Before the U.S. expansion they focused on economic interests , military interests, and belief in cultural superiority  10 people found this useful.

                                   HOPE THIS HELPS;)

the answer is hope this you.