Early Dynastic Period (Mesopotamia) Early Dynastic Period (Mesopotamia) The Early Dynastic period (abbreviated ED period or ED) is an archaeological culture in Mesopotamia (modern-day Iraq) that is generally dated to c. 2900–2350 BC and was preceded by the Uruk and Jemdet Nasr periods. It saw the invention of writing and the formation of the first cities and states. The ED itself was characterized by the existence of multiple city-states: small states with a relatively simple structure that developed and solidified over time. This development ultimately led to the unification of much of Mesopotamia under the rule of Sargon, the first monarch of the Akkadian
St. Johns Country Day School St. Johns Country Day School St. Johns Country Day School is an independent, coeducational private college preparatory school founded in 1953 in Orange Park, Florida, USA. It offers a PK–12 education, including a preschool, an elementary school, a middle school, and a high school, and maintains an enrollment of about 650 students each year. St. Johns Country Day School is accredited by the Florida Council of Independent Schools, Florida Kindergarten Council, and Southern Association of Colleges and Schools. It is known for its 100% college acceptance rate. St. Johns Country Day School was founded by Dr. Edwin Paul Heinrich and