Which government ended feudalism

The theory of mercantilism holds that a nation's economic power comes from a a.enslave people b.become industrial c. willingness to explore d.favorable balance of trade

Brainliestttme : describe the following event: increase in islamic extremism in the middle east

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.