Historians believe that around 300 C. E., the introduction of camels began to transform trade in North Africa, and the animals started to make large-scale trade possible. Many independent merchants sought safety in numbers by traveling in a group called .

What features of the electoral system support the existence of a two party system and analyze one of these features and explain its role

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 best describes the connection between a mechanical loom and a cotton gin