John wesley powell, who led the first boat trip through the grand canyon, called the feature marked by the yellow lines above "the great ". what did he put in the blank?

according to the report, the government has imposed restrictions on freedom of speech, freedom of the press, freedom of assembly, and freedom of association. the official media remained tightly controlled by government censorship and obstruction. restrictions on the freedom to assemble remain a problem in vietnam.

explanation:

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.