The National Marine Fisheries Administration is part of "federal" law enforcement, since it is technically a federal agency that is a "cabinet-level" department.
1) invasions by nomadic peoples from Central Asia" is the one unfying factor that contributed to the fall of the Han dynasty, the fall of the Roman Empire, and the
fall of the Abbasid Empire.
Explanation:
The fall of the empire and therefore the dynasty were similar as a result of each toughened social unrest throughout their collapse. The autumn of Rome and Han dynasty China were additionally similar as a result of they each round-faced roving invasions that greatly contributed to their decline.
To attract investments by foreign countries
The Khmer Rouge in Cambodia was primarily a result of an extreme political ideology. Cambodians have Vietnamese influence and had desire to kick the French out. When their civilization suffers, they resorted to extremism.
The answer would be letter A.