(will give brainiest)how did king darius improve trade in the persian empire? (a)he allowed ships to dock along the coast. (b)he had everyone in the empire use the same money system of weights and measurements. (c)he did not make anyone pay taxes.

What is the difference between a journal entry written by an eyewitness to an event and a play written about the same event? a. the journal entry is a historiographical source, while the play is a periodical source. b. the journal entry is a chronological source, while the play is a primary source. c. the journal entry is a primary source, while the play is a secondary source. d. the journal entry is a secondary source, while the play is a periodical source.