The sovereignty of all the states in the union was weakened.
Escarpment is the boundary line between the great plains and west Texas.
I believe it’s D ! I did some research and D seems like the only logical answer.
The voyages of Zheng he, development of blue and white porcelain, and the establishment of the forbidden city are all associated with the: Ming Dynasty
Zheng he held the position as the fleet admiral during the Ming Dynasty and became the first Chinese mariner that opened up the map from China to South East Asia. During this period, Ming Dynasty also created a city that's exclusively resided for Nobles and High Government official called the Forbidden city.
