The US has spent $1.5 trillion on war since Sept 11 attacks
I can see strong parallels between this and the fall of the Roman Empire:<p>&quot;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 empire had to begin hiring soldiers recruited from the unemployed city mobs or worse from foreign counties. Such an army was not only unreliable, but very expensive. The emperors were forced to raise taxes frequently which in turn led again to increased inflation.&quot; Source: <a href="https:&#x2F;&#x2F;www.rome.info&#x2F;history&#x2F;empire&#x2F;fall&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.rome.info&#x2F;history&#x2F;empire&#x2F;fall&#x2F;</a>