Playa Novillero, Mexico Sign us up. This beach is 56 miles long, a third of a mile wide and water that's shallow enough that you can walk about 330 feet into the water. Ninety Mile Beach, New Zealand Unlike its neighbor to the west, this beach, on the North Island, is really only about 55 miles long.
World-systems theory. World-systems theory (also known as world-systems analysis or the world-systems perspective), is a multidisciplinary, macro-scale approach to world history and social change which emphasizes the world-system (and not nation states) as the primary (but not exclusive) unit of social analysis.
Ecological systems theory provides one approach to answering this question. The ecological systems theory was developed by Urie Bronfenbrenner. Bronfenbrenner believed that a person's development was affected by everything in their surrounding environment. He divided the person's environment into five different levels: the microsystem, the mesosystem, the exosystem, the macrosystem, and the chronosystem.