This falls in the underconsumption theory. It very insighful though, but it would be interesting to see a critique of it, especially that it apparently excludes the relationship between investment and the rate of profit. "Michael Pettis and Matthew Klein's new book Trade Wars Are Class Wars begins with an epigraph from John A. Hobson: "The struggle for markets, the greater eagerness of producers to sell than of consumers to buy, is the crowning proof of a false economy of distribution. Imperialism is the fruit of this false economy." Pettis and Klein update the Hobsonian thesis for the twenty-first century, arguing that, while trade wars are often thought to be the result of atavistic leadership or the contrasting economic priorities of discrete nation states, they are best understood as the malign symptoms of domestic inequalities that harm workers the world over." Trade Wars Are Class Wars
“The West won the world not by the superiority of its ideas or values or religion (to which few members of other civilizations were converted) but rather by its superiority in applying organized violence. Westerners often forget this fact; non-Westerners never do.” —Samuel P. Huntington, The Clash of Civilisation and the Remaking of the World Order, 1996, p. 51