1/2 or 50% of the European immigrants were what? French Italian Syrian Japanese​

How did the american revolutionary war change how some americans viewed the enslavement of african americans?

Andreus vesalius is known for being the first scientist to provide detailed and accurate information about human anatomy. his knowledge of human anatomy came from dissecting human bodies. which statement best shows why andreus vesalius’s discovery was important during the scientific revolution?

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.