Answer:
The earliest civilizations developed between 4000 and 3000 B.C.E., when the rise of agriculture and trade allowed people to have surplus food and economic stability. Many people no longer had to practice farming, allowing a diverse array of professions and interests to flourish in a relatively confined area.
Step-by-step explanation:
While modern civilizations extend to every continent except Antarctica, most scholars place the earliest cradles of civilizations—in other words, where civilizations first emerged—in modern-day Iraq, Egypt, India, China, Peru and Mexico, beginning between approximately 4000 and 3000 B.C.