I think it is answer choice E since the Gadsen Purchase was acquired last.
Answer: bb
Explanation:
bbbbbbbbbbbbbbbbbbbbbbbbbb
The North China plain is bordered on the north by the Yan Mountains, on the west by the Taihang Mountains and the Henan highlands, and on the southwest by the Tongbai and Dabie mountains. To the south it merges into the Yangtze Plain.
Answer:
The expaction became bigger and wider over the years.
Explanation:
