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.
Answer:
In the end, many historians believe the Battle at Stalingrad marked a major turning point in the conflict. It was the beginning of the march toward victory for the Allied forces of Russia, Britain, France and the United States.
Letter C ,Louis IX is ur answer
The right answer is most likely to be 2). The rest are assumptions that cannot be made due to a lack of supporting evidence, or just simply not mentioned.