Don't however cancel your trip abroad. You have to stand your ground on everything you really want in life. As someone who also wants to go abroad next summer and again for a semester in a couple years, I know that if I were to change my plans and live according to what my parents tell me to do. I would end up working for minimum wage my whole life, living at home and supporting the rest of my family. If I did what people wanted and I didn't fight for what I want. My best advice would to be firm but not aggressive, aggression will get you nowhere. Maybe if possible try and find a compromise. For example, I originally wanted to spend my whole undergrad abroad, and for a while my mom and I argued about it. But then we settled on a compromise that I would be allowed to go and visit next summer and then spend a semester there. She even tells me now that if I decided to move out of the country once I was done school. She would be fine with that.
Compromise and firmness is key with parents, and my mom is a lot like your parents seem to be. At least from what I've heard you talk about and such. It isn't easy, and you might not even want to take my advice because lolI'm16 or whatever. But it worked for me and it couldn't hurt to at least consider. Also, who cares if it is considered "first world white girl problems". The people that try to downgrade your problems because their problems might seem worse, are just idiots and not worth your time. I wish you the best of luck with everything, hopefully you can sort it out.