The concept of the separation of powers means that

separation of powers. A fundamental principle of the United States government, whereby powers and responsibilities are divided among the legislative branch, executive branch, and judicial branch.

i think it was   tsar alexander ii

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.