Choose 3 of the following Ancient Civilizations. Mention one achievement for each and explain why that achievement was important to them and/or how that achievement is important to us.

Witch layer of the atmosphere has the most air pressure

What type of coastline is commonly found along the western side of the america’s

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?