Answer:
Orthodox (also known as christian)
Explanation:
Russia has over 5000 orthodox churches and 71% of russia is of orthodox religion. Vladimir the great had an impact on russia and had taken part in the reason why russia is now mainly orthodox. He said that if russia had one main religion that the people of russia could be unified. So that is one reason russia is mainly of orthodox religion.
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soft clay and wet and sandy soil as they are more likely to collapse or corrode over time especially the wet and sandy soil which will erode with rain or water
Natural Gas should be correct