explain the push and pull factors for african americans migrating from the south to the north during the great migration and compare and contrast what life was life for african americans who migrated north vs those who lived in the south

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.

What made it difficult for mexican americans to win court cases against anglo americans who laid claim to their land

Wich statement about the delegates at the constitutional convention is accurate