Republicans and democrats is the correct answer.
Answer:
Until Spanish-American war that was fought in 1898.
Explanation:
After Civil War United States started rearranging their internal, but also external policy. At the end of 19th Century United States started spreading their power outside their country. During that period in 1898 a war was waged against Spain. Known as the Spanish-American war it was fought around Cuba and Philippines. United States remained a world power.
The amendment which guarantees a trial by jury if you're accused of a crime is the 6th amendment.
The 6th amendment guarantees that you must have a trial by a jury of your peers. If you need any other help with what the 6th amendment offers, I recommend this website in order to further research the amendments of the constitution: https://www.law.cornell.edu/constitution/sixth_amendment