142 Our study area is the contiguous United States, including 48 states and 143 Washington, D.C. The contiguous United States has several NO 2 monitoring
Sep 29, 2021 · Homer (c. 800 BC), Hesiod (753 BC) and Kallinos (728 BC) are three of the oldest poets in Europe. The Romans believed that their city was founded in 753 BC, while modern archaeologists and historians believe that the area of modern day Rome has been inhabited since at least 1000 to 800 BC. From 300 AD Christianity in Europe started to spread.