Answer:
I don't know if this is the answer but I hope it helped
Explanation:
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.
The war began when Iraq invaded Iran, it was on September 22 1980. after a long history of border disputes and demands for the overthrow of saddam Hussein’s regime. Itaqi forces did well at the beginning of the war, taking Iranian khuzestan, but before long they were stopped and forced out of iran.
I just had a paper on this. here is a quote that is pretty useful
Mao believed that in focusing on the anti-imperialist struggle, the Communists would earn the trust of the Chinese people, who in turn would renounce the KMT. From Zunyi, Mao led his troops to Loushan Pass, where they faced armed opposition but successfully crossed the river.
hope this helped