Answer:
The French and Indian War altered the relationship between Britain and its American colonies because the war enabled Britain to be more "active" in colonial political and economic affairs by imposing regulations and levying taxes unfairly on the colonies, which caused the colonists to change their ideology from toleration to resentment toward Britain. i could loki do the whole thing lml
To contain communism, thinking was Vietnam went comunist it would spread more globally.
What topic? Can you give more information?
More powerful air force radar and message decoding technologies.
The Germans made efforts to bomb Royal Air Force airfields and take out Britain's radar defense system, but the outnumbered RAF fighters managed to outmaneuver their opponents, aided by radar technology.
As for message decoding technologies, the code-cracking machine developed by Alan Turing had an impact particularly on naval battles in the Atlantic between the Germans and the Allies. Once they developed the ability to decode German messages, the British had to proceed carefully and not act on every military message or the Germans would have suspected their encoded messages were being hacked.
Here’s a link about why the US got involved in Cuba’s war, http://fcit.usf.edu/florida/lessons/s-a_war/s-a_war1.htm it goes over the basics and extra info (btw it’s a real link it’s not a fake one lol)