Developing countries tend to have short doubling times. Why? A: Low birth rates
B: High growth Rates
C: Low Growth Rates
D: A more educated populace

B: High growth Rates

Explanation:

Rapid population growth in developing countries is because of several factors: limited access to family planning, religious beliefs, soperstitions, etc, but the main reason for the increase is lack of money by the population as a whole.

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.