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A primary source is one that is written by someone who experienced the event firsthand. Anne Frank's diary is an example of a primary source. She was the first (primary) person who experienced what happened on that hierarchy.
A secondary source is one that is written about a primary source. It comes second on the hierarchy of receiving historical information because it has to be based on a primary source, which gives the actual information. A history documentary is an example of a secondary source.
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D. Yoruba if its not this I don't know then well good luck
the correct option to this question are
the catholic church unified different kingdoms of Europe under the umbrella of the church. An example is when the church crowned kings as emperors of the holy catholic empire.
the catholic church intervened and settled disputes between rival kings and lords. whenever, there were disputes the king was always at the forefront to handle and resolve disputes.