Today there are many types of Protestant Churches. For example, Baptist is currently the largest denomination in the United States but there are many dozens more. How did this happen? Where did they all begin? To understand the Protestant Reform movement, we need to go back in history to the early 16th century when there was only one church in Western Europe - what we would now call the Roman Catholic Church - under the leadership of the Pope in Rome. Today, we call this "Roman Catholic" because there are so many other types of churches (ie Methodist, Baptist, Lutheran, Calvinist, Anglican - you get the idea).
The Magna Carta and the English Bill of Rights greatly influenced American ideas about government. The Magna Carta contained the ideas of limited government and common law, and it influenced constitutional ideas about limited government, habeas corpus, and the Supremacy Clause.
John Brown was an anti-slavery activist. His goal was to end the institution of slavery. He was executed for charges of treason, murder, and insurrection.