Government was a big reason why Rome collapsed. They did not have any good leaders or rules that will keep a big city together. The government would worry too much about building and not enough on keeping their city under control. Then the country had to many people and were not even close to being a civilized society. Then they noticed but it was already to late and the city collapsed.
Military was probably the biggest reason why Rome collapsed. First they did not have they right equipment. Their equipment was all worn and to heavy