There are 28 countries in the EU.
The treaty that was signed by the countries of Western Europe, along with Canada and the United States, in April of 1949 was C) North Atlantic Treaty Organization (NATO).
The document was signed as a defense mechanism against any enemy external party. The organization's headquarters can be found in Haren, Brussels, Belgium.
The answer is B. Hope this helped! <3
It’s the 4th one trust me bro if not your screen is blurry
