The interregional connections of states such as those on the East African coast can best be used as an illustration of the continued importance of which of the following? А
International diplomacy
B
Polytheistic religions
с
Long-distance trade
D
Patriarchal gender norms
Answer

с . Long-distance trade has proven invaluable to the interregional connections of East African states.

Long-distance trade with the rest of the world has been very important to the unity of East African nations because:

Trade is therefore very important to the unity of these states and it has been like this for many years in many other areas.

In conclusion, long distance trade is very valuable to the interregional connections of states such as those in East Africa.

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the answer is typhoon

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.