NYT v. Sullivan is a landmark SCOTUS case regarding libel. It protects the Press and specifically 1st Amendment protections guaranteeing a free press by establishing a high bar for a citizen to sue the press for libel.
There were many effects, but perhaps the most visible one is the Columbian exchange: the exchange of species, including plant, animal, also diseases such as viruses, on a global scale.
For example, potato plant was imported to Europe. <span />