Is it true that when some members of a species become geographycall isolatedthey are less likely to form new specie?

When some members of a species become geographically isolated, they are more likely to form new species. This is because geographical isolation prevents gene flow between the two populations, which allows them to evolve independently. Over time, the two populations can become so different from each other that they are no longer able to interbreed, and they are considered to be separate species.