context: The Norman expansion in Wales is a series of military-political operations of the kings of England and the Anglo-Norman barons at the end of the XI - beginning of the XIII century, aimed at subordinating the territory of Wales. Beginning immediately after the Norman conquest of England in 1066, the Norman expansion in Wales continued with varying intensity over a century and a half. As a result, the Welsh kingdoms of Gwent, Morgannug and Briecheinhog were eliminated, most of the territory of Wales was conquered, where the so-called “Welsh Mark” was created, and classic forms of the feudal social system were introduced. The Norman expansion of the late 11th – 12th centuries created the conditions for the final conquest of Wales by Edward I in the second half of the 13th century.
question: In what area was the Welsh Mark created?
answers.text: Wales