Which of the following contributed to the doubling of the Chinese population during the Tang and Song dynasties?

a they donate money to humanitarian causes

c   they volunteer to alleviate suffering

d   they blame all muslims for not being able to keep their fellow muslims in line.

the answer in this question is b.(1) create a clear chain of command; (2) limit independence of lower-level workers.  the numbered pair of phrases that best completes the tables as it relates to the united states federal bureaucracy was (1) create a clear chain of command; (2) limit independence of lower-level workers.