Whole numbers dipped in 2013, on average, more than million people obtain legal permanent residence in the united states each year. the largest percentage of these new residents are from , followed by new residents from , which is a category that includes both mexico and canada.?

I'm not so sure about the anwer for this one, since there are no options for the expected answer (evethough is a which question), BUT, I would say is: bordering countries, given that the United States of America shares borders with both of these two countries.

Another acceptable, yet less formal, term would be neighbour countries. But, I'd rather use the first one.