Final answer:
The name that Wegener gave to the large landmass comprised of all the other continents is Pangaea.
Step-by-step explanation:
The name that Wegener gave to the large landmass comprised of all the other continents is Pangaea. Pangaea was the supercontinent that existed during the late Paleozoic and early Mesozoic eras, about 335-175 million years ago. It was composed of all the current continents joined together as one large landmass.
Learn more about Plate Tectonics