How does the continental drift hypothesis illustrate how things change?

the hypothesis pretty much states, that all of the continents on earth slowly drift, this is a theory that goes along with evolution. they think the continents drift because when we started to find dinosaur bone scientists started to notice that almost every dinosaur species was exactly the same even though they are on entirely different continents. so they did some tests for a species and found that is the contents were the same as they were at that ime then those dinosaurs would not be that way they were, they would have some kind of evolutionary destintion between them. and that is when they proposed pangea, and shortly after that the contenential drift theory