The oldest book would probably have to be The Bible...
When merchants traveled between towns selling goods, they would have items from different places and cultures. The buyers of these merchants would be fascinated with the new items they had never seen before of different cultures, and so they would buy those items and spread them around until everybody knew about and became interested in other cultures. The cycle continued, causing more and more people to appreciate other cultures.
Answer:
The French had better relationships with the Native Americans than most other Europeans because they didn't treat them badly. Instead they converted to their religion and didn't push them off of their land like the Spanish did.
Answer:
Through the criminal experience gained and the political connections established in gambling and prostitution rackets in the early 1900s, gangsters had become well prepared for the exploitation of Prohibition, which was ratified as the 18th Constitutional Amendment in 1919.