15. Inside a large pot put the 2 cups of Tigris and Euphrates Rivers, the ¾ cup of Fertile Crescent, and the 1 package of Neolithic Farmers.
16. Mix the mixture up and bring to a boil from 5000 to 4000 BC.
17. As the mixture boils, sprinkle in the 2 packages of ground City-States while stirring.
18. After the mixture boils, add the 10 cups of Polytheistic Religion and the 3 tablespoons of Cuneiform. Let this simmer for about 1000 years. While it is simmering sprinkle in the ½ cup of Trade.
19. Then, add in the 2 cups of Science, the cup of Mathematics, the 5 teaspoons of Warrior Kings, and the 2 cups of Priests. Stir thoroughly until everything is evenly distributed. Bring the stew back to a boil for another 200 to 300 years.
20. After the stew has boiled for a second time, take it off the burner and let it cool. While it is cooling add in the 2 cups of Education and the ¼ teaspoon of Architecture.
21. Before serving the stew, make sure it is a warm temperature. When it is add in the package of Nomad Invaders.