Start by naming any country that France borders. Then name any country that borders any of those countries. Then keep going until there are no more countries left to name.
That's really not how to make a word search quiz. Check out other word searches and do what they do. That's a formatting critique. In terms of the quiz itself, all but one of the words is horizontal, and none of them are backwards. It's a simple matter of reading each line. Try a bit harder to add some challenge. In its current state, it's not going to nominated. 1 star.
Great quiz! Can you consider putting each letter into a 'cell' like in a table? That would be interesting. Also not to be nitpicky but the S in 'Asia' doesn't get highlighted. Great quiz though