The countries of Jordan and Iraq are both located to the north of the Saudi Arabian border.
I think that the best answer is
<span>B people were not careful about preventing waste and contamination, although one could also find good arguments in favour of A and C.
A big problem was that oil was very easy to find, so people didn't protect every source and were often wasteful, letting the oil spill to the ground.
Taking precautions to prevent pollution is always more costly than not doing it, so it could be argue that this did not change, and is therefore not applicable as an answer to this question.</span>
The United States, Canada, and Mexico...it is kind of hard to give any info, but they are all in the same hemisphere, and since they are near each other, trade is much easier than trading with other countries.