How to ask someone "what made you choose English language as a major at university" in Japanese?
I am having difficulty with the "What made you..." part, can't figure out how to translate it. Also, how would I say "What >inspired you< to choose English language as a major at university"?

Is there some general way to make statement like "What made you eat...", "What made you think...", "What made you laugh" e.t.c?

Besides this I have these 2 other sentences: "From the profile I find that you are interested in japanese" And "I am sure you know about this face already"

How do I translate the "I find that you are" in the first sentence and "I am sure" in the sencond sentece. I am just being held down by such simple phrases.

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Thanks, I thought that simply using どうして maybe somewhat rude. Is it really the way to say it?

Also, how would I say this one last sentence "as you can see I am not a beginner"