Translation of corruptible in Spanish

I want to improve my level of English. Have you ever been in the U.S. and in which states have you been? I've been in England, Scotland and Ireland, but unfortunately, I have never been to America.
I grew up in Angola, but now I'm in Hanover, not far from your border town. I used to study at the university in Boston, Massachusetts. I have graduated from MIT, which is the technology institute.
How long have you been practicing Spanish using this site and in which lesson are you now? I am now at vocabulary lesson number 3. It is still hard for me, but I'm quite new here and need to get better.