…ess march toward an interconnected world, one in which peoples and cultures can’t help but collide. In that world — of global supply chains, instantaneous capital transfers, social media, transnational terrorist networks, climate change, mass migration, and ever-increasing complexity — we will learn to live together, cooperate with one another, and recognize the dignity of others, or we will perish. And so the world watches America — the only great power in history made up of people from every cor…