Answer:
The answer is A.
Explanation:
The answer is A. Scientists now studying from approximately 66 million years ago in the prehistoric era say that all of the dinosaurs died when the colossal asteroid impacted all of them. This is what started the cretaceous era.
Here you go! I tried my best with explaining my answer.
I think the answer is d. I know all the other things happen, but not pretty sure what d does. my best guess.
Answer:
In terms of protocol: the head of a sovereign, independent state is usually identified as the person who, according to that state's constitution, is the reigning monarch, in the case of a monarchy; or the president, in the case of a republic.