In the 430s, Roman Empire's declined power over ports in the Southern of their territory is attributed to the invasion of the Vandals or the East Germanic Tribe. The Kingdom of Vandal is led by Gunderic who unified various tribes in conquering the territories especially those near the sea.
<span>Before the Louisiana purchase, the US Territory extended to the east bank of the Mississippi river, but no further. When Napoleon sold the Louisiana territory to Jefferson, that purchase doubled the size of the United States... suddenly, the US owned the Great Plains, the Midwest, the eastern Rockies, and a piece of the Gulf of Mexico. </span>
The Union Pacific and Central Pacific railroads connected in Utah.
