Yes they did because they wanted African Americans to return to the land of their ancestors
Answer:
Han Dynasty controlled the largest.
This answer depends greatly on the time period in question, but generally speaking it is true that the presence of many rivers and mountains protected China from invaders, and allowed their culture to grow with little outside influence, with the exception of Mongolian invasions from the north.
Attempts have been unsuccessful because
a two-thirds majority vote is required in the Senate to convict and remove a president an outcome that has yet to occur. Without enough votes it won't happen.
