Public assembly facilities have existed since A. medieval times. B. the early 1900s. C. ancient times. D. the invention of baseball in the Elysian fields of the 1840s.

C. Ancient times

Explanation:

Public assembly facilities are places designed for the gathering of a large number of people. This can be due to special occasions/events organized or a place of relaxation by people.

Public assembly facilities include Stadiums, amphitheaters, special event facility, trade show center/expo center/convention center, performing arts facilities etc and they are known to have existed since ancient times.

albany plan of union, 1754. the albany plan of union was a plan to place the british north american colonies under a more centralized government

i believe we're not a republic so that is a hard question