Pediction of Earths Land Masses

I think that in 200 million years from now all of the countries will become one like said in the previous paragraph. If all of the continents continue to move in the same direction, and if the Atlantic ocean continues to expand then we will have a huge continent again. But there are two theory's in this situation. One is that the Pacific ocean will diappear and the Atlantic will be a huge ocean. The other is the exact opposite.