What was the main religion of the persian empire?

a. deism
b. hinduism
c. zoroastrianism
d. roman catholicism

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.

Brainliestttme : )] -how is terrorism different from traditional warfare?

How was the age discrimination in employment act amended in 1986?