Answer:
D.
Explanation:
None of the answers really make sense. A civilization would most likely engage in trade when they are low on a resource (food, gold, weapons etc.) The answer is definitely not B. A could be correct just for the fact that if a country isolates themselves, then the may be in need of a resource, however if they purposefully isolate then they wouldn't be likely to trade. So A is out. C could also work because it times of wars, amends need to be made and sometimes that can be done with trading. Still I believe the most plausible answer of these 4 would be D. Hope this helps! :)
Known for its autocratic government and large gas reserves, Turkmenistan also has a reputation as an island of stability in restive Central Asia. Turkmenistan produces roughly 70 billion cubic metres of natural gas each year and about two-thirds of its exports go to Russia's Gazprom gas monopoly.
Because he was the first african american to play major league baseball
They believed the universe was governed by natural and unnatural laws