The 1850 decennial census was the first census in which data were collected on the nativity of the population. From 1850 to 1930, theforeign-born population of the United States increased from 2.2 million to 14.2 million, reflecting large-scale immigration from Europe during most of this period.
The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.
The provision was to have neutral grounds with most members and allies.<span />