D because that’s true correct
Explanation is true
A primary source is about somebody that witnessed an event or something
A secondary source comes from someone that heard that didn’t witness the event
For example the news is a secondary source and the person that was at the event is primary
After Muhammad’s death in 632 CE, his friend Abu Bakr was named caliph and ruler of the Islamic community, or Ummah.
The Continental Congress adopted the Articles of Confederation, the first constitution of the United States, on November 15, 1777