关于一个阅读中出现的长句子理解

However, although numerous political and economic factors were operative in launching the move to integrate the EC's marks, concern about protectionism within the EC does not appear to have been a major consideration. This is in sharp contrast to the FTA, the overwhelming United States protectionism. 哪位朋友有逻辑性的分析翻译一下这个句子，因为这个句子涉及了转折和让步语态，以及强对比，所以自由格外重视，感谢大家帮助特别是自由标出的那些黑体字化线部分，感谢大家