Discuss American involvement in the Vietnam War. Include how and why it got involved, the experience fighting in Vietnam, why it withdrew and the effects of the war and withdrawal. help pls

What was the first major route to connect europe and asia

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 role did oregon play in the 1844 presidential election