<span>The development of many new consumer goods</span>
They are examples of A) concurrent powers. Hope this helps!!
Only 1/4 (25%) of Greece is arable (farmable) land, so the Greeks relied heavily on fish and other seafood for survival. Also, olive trees are native to the area so their diet was and still is based on a lot of dishes involving olives, olive oil, and wine.
They actually played a pretty important role in early civilizations. For one, building a major urban civilization takes a lot of work. Slaves could be used for building projects to enlarge the city and its defenses, for agricultural labor to ensure that the people of the city could eat, or as domestic assistants to kings, lords, and shop-owners.
Many primary civilizations started in river valleys because for the cities in each civilization an important portion of the population existed in cities. Large-scale farming was a requirement to feed the large populations. Fertile due to flooding the land by rivers was home to lush plant life and an outstanding place to plant and grow crops. The close source of water permitted for irrigation for the large-scale farming as well as drinking and bathing. Water also intended animals and animals meant food so this was another advantage to settling in river valleys. Settling and living in river valleys later main to further development of civilizations and new patterns of living such as trade and communication by means of the river for transportation.
