The cause of the civil war was about no slave and for the USA to be free to all.
Answer:Islamic thinkers made great advances in medicine. They also translated Greek and classical texts into Arabic. They built libraries for scholarship and to preserve great texts. They made great advances in the study of astronomy, and they produced great works of art using such Islamic ideas as the arabesque and calligraphy
Answer: I say it's because all of the citizens rule the civilization not allowing any person to overthrow one making it difficult for them to overthrow many.