Which form of promotion is most suitable to promotIIncluding much of Europe, the ______ is one of the world's most important free trade zones. It is also a political and economic community composed of more than 510 million citizens.ncluding much of Europe, the ______ is one of the world's most important free trade zones. It is also a political and economic community composed of more than 510 million citizens.e complex and technical products such as automobiles, computers, and investment services