The Hall of Supreme Harmony is
a. a Japanese temple in continual use from the 15th century to the present day
b. the most important building in the Forbidden City
c. the most important building in the history of Japan

ᡩᡳᠶᠠᠨ;Möllendorff:amba hūwaliyambure diyan) is the largest hall within the Forbidden City in Beijing, China. ... Built above three levels of marble stone base, and surrounded by bronze incense burners, the Hall of Supreme Harmony is one of the largest wooden structures within China.

The answer is B.

Source wikipedia

Explanation:

as general terms,  indian territory,  the indian territories, or  indian country  describe an evolving land area set aside by the  united states government  for the relocation of  native americans  who held  aboriginal title  to their land. in general, the tribes ceded land they occupied in exchange for  land grants  in 1803. the concept of an indian territory was an outcome of the 18th- and 19th-century policy of  indian removal. after the  civil war(1861–1865), the policy of the government was one of  assimilation.