The USA wanted to prevent areas of the world falling under Communist influence. The Cold War was at its height in the late 1940s and early 1950s, when the French appealed to the USA for aid. The US government saw Vietnam as another Korea.
What document? But if I have to guess, it would be 1,2.5. These are rights that are prominent in the enlightenment period.
The Progressive Era was a period of widespread social activism and political reform across the United States that spanned the 1890s to the 1920s. The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.
In reality yes and no. The assassination of Franz Ferdinand did occur in the Balkans, and was the result of a situation in the Balkans. However Franz Joseph declared war for other reasons as well. This is a topic I encourage you to research on your own. Not only if the cause came truly from the Balkans, but also if it was really "foolish".
The Great War channel on youtube has a lot of educational and helpful content regarding world war one's causes if you look for their "Prelude to war" specials in their channel.