This link to maps that will help you make you make sense of the world may stimulate discussion in a number of units:

http://twistedsifter.com/2013/08/maps-that-will-help-you-make-sense-of-the-world

This infographic offers a glimpse into the power of the world's passports as ranked by the travel freedom the passport holder enjoys.

http://awesome.good.is/infographics/how-powerful-is-your-passport/516

Historical Fiction and Social Studies