The Central Intelligence Agency (CIA), was formed in 1947 in the National Security Act. It is a civilian intelligence agency whose primary function is to collect and analyze information about foreign governments, corporations, and persons in order to advise public policymakers. Every year they publish a fact book about every country in the world, that is available online for free.
Check it out : https://www.cia.gov/library/publications/the-world-factbook/
Now, I'd like to pull out some fun facts from the CIA:
The Iranian congress consists of:
170 Islamists
46 reformers
7 independents
3 religious minorities
The United States Congress (combined senate and house) consists of:
282 Democratic Party
251 Republican Party
2 independent: (that's counting Joe Lieberman!)