Zakaria notes that the United States promoted democratization after the Cold War

Zakaria notes that the United States promoted democratization after the Cold War despite having a relative undemocratic form of liberal constitutionalism. Based on his arguments, what would you argue is the main lesson that the American system has for the rest of the world, and what is the main lesson that it should learn from elsewhere?
Is China’s “spraying all the crops” approach to countering violent extremism (CVE) likely to be effective or to encourage more political violence? What lessons should the US learn?