Which idea from the enlightenment was used in the declaration of independence? science can answer all human questions. people have governments to protect their rights. revolution leaders should explain their ideas to the world. kings get their power from god.

What has been a long term effect on the panama canal

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.

In what is known as the great migration, large numbers of african americans moved from the rural south to northern cities, beginning in the early twentieth century. what motivated this large-scale movement?