What is one reason. why colonial government established

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 term describes a philosophy that supports representative government, human rights, and political equality? a. social contractb.liberalismc. serparation of powersd. absolute monarchy

Sea level increases when the number and size of glaciers on earth increase. true false