Answer the following 4 questions in 300 words or more (one screen double-spaced) in essay form (introduction, main paragraph or paragraphs in which you present your main points with supporting examples), and a conclusion. Please answer the following four questions: 1, What steps in the Neolithic revolution led to the growth of settled civilization and the first states (use all sources such as learning resources, modules, lectures, and the web) ? 2. Please describe the economic, social, and political chacteristics of two of the following four ancient states: (Nile River Valley/Egypt); (Tigris-Euphrates/ Mesopotamia); Indus River Valley/India); and Hwang-Ho or Yellow River/China)! 3. Please describe the economic, social, and political characteristics of one ancient African and one ancient American (pre-Columbian) civilization! 4. Please compare and contrast the following classical civilizations: Greek/Hellenistic, Roman, and Persian)! .