加拿大是一个由省份和地区组成的联邦。
Canada is a ___federation of provinces and territories.
在南斯拉夫,体育运动是促进整个联邦稳定的重要因素。
In Yugoslavia, sports was an important factor contributing to the overall stability of the ___federation.
欧盟可以被视为一个由独立国家组成的联邦。
The European Union can be considered a ___federation of independent nations.