Answer:
The definition of federalism is straightforward: it is the federal principle or system of government. Throughout history, it has been a political system where 2+ governments share authority over the same geographical area.
Answer:
1. Invasions by Barbarian tribes. 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.
Explanation:
Maintaining an army to defend the border of the Empire from barbarian attacks was a constant drain on the government. Military spending left few resources for other vital activities, such as providing public housing and maintaining quality roads and aqueducts. Frustrated Romans lost their desire to defend the Empire.
The stock market crash of 1929
a--All three countries wanted to spread the new knowledge they gained with the rest of Europe
