Mesopotamia and the United States differed in their religions, job specializations, governments, and languages. Mesopotamia had polytheistic religions like Sumerian and Akkadian beliefs, with most working as farmers in cities like Babylon and Ur. It was ruled by kings with a cuneiform record keeping system. The United States has a majority Christian population with many working in services, manufacturing, and retail in cities like New York and Los Angeles. It has a federal republic government led by a president with a writing-based recording system. Both civilizations adapted technologically and socially to their environments through achievements like irrigation systems in Mesopotamia and industrialization in the United States.