Can someone help pls! :) btw a primary source is
a first-hand account of an event in history, a source of evidence about an event created by people who experienced the event

Examples diary entries, political speeches, and, government documents

C. A biography of Charlemagne written by his friend and attendant Einhard in the early 9th century.

This is because the attendant would have been living these events as they happened, and because Einhard was a friend of Charlemagne, would have had close and intimate knowledge of how the king behaved in the events as they happened.

a:)

Explanation:

because he originally made it.

the answer should be monarchy

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.