Answer:
publishing of Uncle Tom's Cabin
Explanation:
This book showed to horrors of slavery to the northerners by giving them insight into something they really didn't know much about, they knew that slavery was bad, but they didn't realize it was THIS bad.
The underground railroad just freed slaves, it didn't really show the horrors of slavery to the northerners, same thing with slave revolts. Henry Brown exiting the box was influential to a certain degree, but not nearly as much as Uncle Tom's Cabin was.
Congress is divided into two institutions: the House of Representatives and the Senate. The two houses of Congress have equal but unique roles in the federal government. ... Every state has an equal voice in the Senate, while representation in the House of Representatives is based on the size of each state's population.
Hope this helped! :D
The 5th amendment.
Further explanation:
If you have seen those crime shows, usually the defendant is asked if they want to plead the fifth, which means they do not have to testify in court (no self incrimination).