Describe a major factor in the longevity of the Swahili city-states' influence.

the weather along the coastal area allowing for an increase in farming
the wide variety of goods that they offered
the number of cities along the coast overwhelming any competitors
the trade network that connected the city-states to other powers in the Indian Ocean

One major factor in the longevity of the Swahili city-states' influence was the trade network that connected them to other powers in the Indian Ocean. The Swahili city-states developed extensive trade connections with various influential civilizations such as the Arab traders, Persian merchants, and Indian sailors. This trade network allowed for a continuous flow of goods, ideas, and cultural influences between the Swahili city-states and these foreign powers.

The Swahili city-states had a strategic location along the East African coast, which made them an important hub for maritime trade. They served as key intermediaries in the exchange of goods between the interior African regions, such as gold, ivory, and slaves, and foreign merchants seeking products like spices, textiles, and porcelain. This trade not only brought economic prosperity to the Swahili elites but also contributed to the growth and development of the city-states.

Furthermore, the wealth and prosperity gained from the Indian Ocean trade allowed the Swahili city-states to establish and maintain influential political and social structures. The rulers of these city-states, known as sultans, accumulated great wealth and power, making their cities centers of political authority and cultural refinement. This, in turn, helped to solidify their influence and attract merchants, scholars, and artisans from different parts of the world, further enriching their cultural heritage.

The Swahili city-states' ability to offer a wide variety of goods was also a significant factor in their longevity. They were able to provide commodities, such as gold, ivory, aromatic woods, ostrich feathers, and slaves, which were in high demand in foreign markets. This ensured a constant inflow of foreign traders seeking to acquire these valuable goods.

Overall, the combination of a well-established trade network, a strategic location, and the ability to offer a diverse range of goods allowed the Swahili city-states to maintain their influence and prosperity for several centuries. This longevity enhanced their cultural and economic development, making them renowned centers of commerce and contributing to the rich history of the region.