A site developed by Cornerstone Information Solutions is http://www.flagsinformation.com.
The website will earn money through displaying Google adverts and through affiliate marketing and is a blend of Cornerstone's website delivery services merged with Internet Marketing.
I've built this up over the last 2 months and there are well over 250 pages through the site.
The site is dedicated to flags and the study of them (vexillology).
Every country in the world is represented here are 2 examples:
United Kingdom - http://www.flagsinformation.com/united_kingdom-country-flag.html
USA - http://www.flagsinformation.com/united_states_america-country-flag.html
Also there are various pieces of information about each country, these are summarised for every country of the world in these following pages:
Area in km2 and continent - http://www.flagsinformation.com/area.html
Populations and capitals - http://www.flagsinformation.com/populations.html
A-Z/Sitemap - http://www.flagsinformation.com/a-z.html
Currencies - http://www.flagsinformation.com/currencies.html
ISO codes - http://www.flagsinformation.com/iso.html
Languages - http://www.flagsinformation.com/languages.html
Religions - http://www.flagsinformation.com/religions.html
Why not give this site a try, it's ideal for geography lessons and research into the countries of the world.