In the 70s , when there was a resurgence in interest in Bible prophecy, particularly after Hal Lindsay published The Late Great Planet Earth, most prophecy speculators from mainstream Christianity (usually independent purveyors of their own books and videos; the churches generally kept out of such speculation) decided that the beast was the EU (ECU back in the day). Their reasoning was usually that the beast had ten horns and ten crowns, and it would only be a matter of time before there were ten EU members. When Greece joined in 1981, I bet they all wet themselves!
I never followed those guys much after that. I wonder how they spun Spain and Portugal joining in 1986?