It's most likely the principle of Checks and Balances.
For modern society to develop normally, the people themselves, first of all, need to understand that the use of natural resources uncontrolled in the future will have serious consequences. But, unfortunately, in some countries the government solves environmental problems as they arrive, although there is such an organization as the "Club of Rome", it is engaged in environmental forecasting. People need to be given to understand that they are only part of nature and the consumption of natural resources should be roughly equal to the rest of the living creatures. In developed countries environmental education is at a good level, children from early years are taught to appreciate and cherish the environment. It is developed only in prosperous countries, and as the majority of adults belong to ecological consciousness very neutrally, simply because of ignorance of all ecological situation in the biosphere.
Darius made persepolis(Parsa) the capital of the Persian Empire
If I remember correctly Cuba and the soviets teamed up and because of that cuba was given nukes making it dangerous, I believe it is A
