How did this diagram advance scientific thinking?

The oldest known mesopotamian civilization settled in areas along river banks or sea sides surrounded by mountains and deserts which two statements explain why three geographical features led to the rise of mesopotamian civilizations

By the year 1900 new york city had more than just people of british heritage. there were more people of italian descent than the cities of florence, genoa and venice put together. it was home to more irish than dublin (the capital of ireland) and more germans than hamburg. joining them were many thousands of people of polish, hungarian, and czech descent. what term best describes new york cities changing culture? a a pot of chili b a bowl of sugar c a cup of coffee d a slice of cheese

After studying the timeline above, what observations can you make about u. s. environmental policy between 1970 and 1996?