The kind of people who traveled on steamboats were gamblers and farmers. Women also traveled, but the steamboats held many gambling rooms.
Captain America i think
<span />
The telegraph because it faster than riding on a pony across the us
The bridge "rose" from the ocean as vast amounts of ocean water became tied up in the enormous glaciers of the last ice age. That exposed the broad continental shelves now covered by the Bering Strait and created the land bridge. The bridge last arose around 70,000 years ago.
