This would be immigration.
what are you putting the gunpowder in
Prior to the conflict between Britain and its North American colonies, the colonies were able to manage majority of its own affairs without Britain's interference. However, when Britain started implementing stricter measures on their colonies' trade and other affairs, the colonies didn't like it. This started the tension between both parties.
D. maybe but I'm not totally sure. I'm sorry this isn't my best subject, but you can always ask me. I'm always here to help with whatever you need.