Be less confrontational
I'm an Asian American, and compared to many other Americans, I'm reserved. But during the summer of 2008, I had a chance to go to Ghana with InterVarsity to do some volunteer work and evangelism with Ghanaian college students. One of the big things that I had to get used to was the fact that Ghanaians are not as confrontational and forward about things as we are. In fact, when we were forward with them, they were often offended. This is probably true in most countries out of the US, and is something to be aware of.