How is the grand canyon like a history book

The hutu militia group responsible for carrying out widespread murders in rwanda in 1994 was a. the rpf b. the habyiramana c. the interahamwe d. the nazis

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

Which artificial waterway allows the passageway allows the passage of boats between buffalo and albany ( new york) and, eventually, the atlantic ocean? a. erie canal b. suez canal c. panama canal d. ontario canal