Europeans gained new materials like gold, silver, and jewels. The Europeans enslaved the Native Americans and took most of them back to Europe. The explorers also gained new foods like corn and pineapple. Columbus also discovered tobacco seeds and brought the seeds back to Europe.
Some basic effects of Europeans coming to North America are that the Native Americans caught new diseases which included smallpox, influenza, measles, and chicken pox. Explorers used superior fire power, like single shot muskets, to conquer natives.
the decision of the Supreme Court in Schenck v. United States? Immigrants to the United States are consistently denied equal protection under the law. A person's best protection from persecution rests with the Supreme Court.