<span>It also combined the councils of the three organizations into a common Council of Ministers. The EEC, Euratom, and the ECSC—collectively referred to as the European Communities—later became the principal institutions of the EU.</span>
The answer is D, a writing system
I'm not really sure if you need a broad or detailed definition of the policy, but I'm assuming you want a broad explanation.
The US Policy of Containment was a policy put forth during the Cold War to limit the influence of communism around the globe by attempting to prevent the spread of communism from Russia to other countries around the world. Hope that helps :)
➡️The Habsburg Period in Spain is the collection of events between the 16th and 17th centuries. ✔️
➡️It begins with the Holy elected emperor of the Roman Empire, Fredrick the III.✔️
➡️The Habsburgs, of Austrian descent, was the dominant ruling family at the time; the most significant rulers are noted as Charles I and Phillip II.✔️