the earliest cities

• sumer occupied the land between the tigris and euphrates river
• population increased by 40,000
• irrigation was invented
• fertile crescent
• able to store food better
• started worshiping gods and goddesses 
• kings emerged and the concept of the city state
• earliest for of writing known as cuneiform 
• a pantheon of sumerian god and goddesses
• divided the hour into minutes and minutes into seconds 
• created the calendar based on moon cycles 
• ziggurat was a sumerian temple on top of a mountain
• wandering nomads herds of domestic animals 
• king hammurabi of babylon created a series of laws known as hammurabi's code
• indo-european tribe known as hittites settled in asia minor