Factbook
I was thrilled to read the overviews of the countries and learn their flags. So far, this app has been very useful. I love the section that shows where the country is located, and an overview of the history, geography, politics and general information about the country. Lots of good info in this app and easy to follow. I highly recommend this excellent app!
Sovoreg about
World Factbook & Atlas, v3.2