Why is almost all the landmass on one side of the globe? One side of the Earth is almost completely covered with water (the Pacific), while landmass is almost all on the other side. Is this coincidence or plays there something else? This difference is not as pronounced as the difference between North and South.
NVZ is correct. Get a palaeo-geographical atlas and see how the the distribution of the continents has changed over time. There is much more ocean than land, and it has ever been so, but there is no particular pattern to the way the continents have drifted. It's not quite random because the heat distribution in the mantle isn't random, but given the conveyor belt system of plate tectonics there will always be a tendency for crustal plates to clump together before breaking up and then clumping together somewhere else.