Alfred Wegener.
The giant landmass that once contained all of the continents is called Pangaea.
All continents have landmasses that narrow. In fact, all continents are wider in the north than in the south. It is unknown why.
Australia and Antartica are the two continents entirely within the southern hemisphere.
Alfred Wegener, a German scientist, was one of the first to propose the theory of continental drift in the early 20th century. He suggested that all continents were once part of a single supercontinent called Pangaea and had drifted to their current positions over time.
Alfred Wegener.
Alfred Wegener named the supercontinent he proposed "Pangaea," derived from the Greek words for "all lands." He suggested that all modern continents were once united as one landmass before breaking apart and drifting to their current positions.
The name given to the landmass when all continents were together is Pangaea. It is a supercontinent that existed about 300 million years ago before breaking apart into the continents we know today.
a continental theory
Pangaea
the answer is Pangaea
Pangaea.
Pangea