Because it’s closer to Donald Trump
Alfred Wegener produced evidence in 1912 that the continents are in motion, but because he could not explain what forces could move them, geologists rejected his ideas. Almost 50 years later Harry Hess confirmed Wegener’s ideas by using the evidence of seafloor spreading to explain what moved continents.
They were sent to concentration camps.
World War 2 occurred in the late 40's, so this is most likely why there is a dip in that age group.
Mercator projection is suitable for maritime navigation
