To start off your first one , it means when they first settled in England, the settlement wasn’t good enough along with the environment
Major Rafael Chacon, 1st New Mexico Cavalry.
Colonel Francisco Abreu, 1st New Mexico Cavalry.
Santiago Martin, 1st New Mexico Cavalry.
https://www.nps.gov/foun/learn/historyculture/new-mexico-volunteers.htm
The Korean War. North and South Korea are still technically at war. An armistice was signed in 1953 to halt fighting, but no final treaty was signed, unlike after World War 2.
United States, NATO allies and South Korea fought against North Korea, who received aid from Chinese forces.
This an example of actual combat during the so-called Cold War between the United States and the Soviet Union between 1945-1991. The two sides had different ideologies (democracy vs. communism), which led to friction.
The purpose of the counter-reformation was to fight against reformation which was turning more and more people against the Catholic church. The council of Trent was called to host sessions and debate on how the Catholic church should respond to reformation. The Jesuits were important because they started organizing missions worldwide in order to teach people about Catholicism and the pope and Christianity and similar things and were successful at it. The outcomes of the council were a series of declarations on how the church should behave.