How are they similar to the ancient civilizations of Mesopotamia, Egypt, the Indus River Valley, and the Yellow River Valley? Why do you think civilizations which developed halfway across the world exhibit similarities? How are they different? Are there specific reasons why differences exist? When responding to your classmates, include new, additional research to support or disprove their position. Make sure to use proper APA format for all citations provided and include a reference list for the citations you use. Needs to be 2-3 paragraphs