Generally speaking, "d.Language barriers" were not a problem faced by multi-ethnic countries in Africa after independence, since relative to some of the more serious problems, like genocidal violence, this was not an issue.
I do t know what the sea arch is but I'm assuming the teacher wants you to say that after a few thousand more years it will start to erode and break spsrt
Could you rephrase your question please?
Answer:
Montesquieu called the idea of dividing government power into three branches the "separation of powers." He thought it most important to create separate branches of government with equal but different powers. That way, the government would avoid placing too much power with one individual or group of individuals.
