Historians consider the greatest achievement of the Byzantine Empire to be the preservation of Greek and Roman cultures Because
Greek and Roman literature, arts, mathematics, engineering, etc. has
been preserved by the Byzantine Empire, people were able to have access
to the information and ideas that the Greeks and Romans produced which helps modern mathematicians and engineers to this day.
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The correct answer to this question is C) some ideological parties have been around a long time.
A sentence that is true about political parties is that some ideological parties have been around a long time.
Ideological parties based its ideology on beliefs that were created from the formation of the party, like economic, cultural, political, environmental or social matters. Ideological party's members have concerns on different matters than traditional parties. Their set of beliefs make them have strong convictions that are going to defend in any circumstance. Some times these ideological parties represent a good and firm opposition to the ruling party. It is true that some ideological parties have been around a long time.
I think you should double check it and see if you can find the answer if not come back and ask again
