What created one of the biggest civil wars in Russia?

Explanation:

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity