For which breed was no registry established until the 1970s, despite their origins being traced back to breeding associations earlier?

The Morab breed, a cross between the Morgan and Arabian horses, did not have a formal registry established until the 1970s, even though its lineage can be traced back to breeding attempts made earlier. The breed itself began to emerge in the mid-20th century, and the initiation of a recognized registry was necessary to provide structure and standards for Morab horses. The establishment of the registry allowed for better tracking of lineage, breeding practices, and the promotion of the breed as a distinct entity within the horse community.

In contrast, the other breeds mentioned either had established registries well before the 1970s or originated from long-recognized breeding practices, allowing for more formal oversight and structure in their breeding. The Oldenburg breed, for example, has its roots in Germany and has been recognized for many decades. Icelandic horses have been registered for centuries due to their long history in equestrian culture, and Friesians are celebrated as one of the oldest horse breeds, with registries dating back further than the 1970s. Each of these breeds has been part of formal breeding records and associations much earlier than the Morab.