The document discusses similarities between four early civilizations: Mesopotamia, Egypt, Indus Valley, and China. It notes that these civilizations had connected governments and religions, centralized empires that controlled territories through force, and dynastic cycles in Egypt and China. Economically, they relied on agriculture and had government regulation of trade and taxation. Religiously, they practiced polytheism based on sacrifice and rituals. Socially, there were upper, lower, and sometimes middle classes of warriors, priests, government workers and merchants. By 1000 BCE, all four civilizations were in decline.