Number 4 because the manhattan project dealt with atomic bombs
The Bill of Rights was added
Answer:
because the river is long
Explanation:
Answer:
D. came to a mesterious end.
Explanation:
The Mayan civilization lasted longer than 1,000 years and hit its peak between 250 A.D. and 900 A.D.. The fourth answer would be correct because no one knows what caused the decline of the Mayan civilization.