Urbanization in the 19th and 20th century mean this is very seldom still the case. How many people live in such small towns? And those who more often find spouses via work or in the course of their education, which seldom takes place in such small towns.
In any case the defect rates for such towns are only very seldom a problem. A better point in your favour might be the relative close relatedness of say the Aksenazi Jews.
Urbanization in the 19th and 20th century mean this is very seldom still the case. How many people live in such small towns? And those who more often find spouses via work or in the course of their education, which seldom takes place in such small towns.
In any case the defect rates for such towns are only very seldom a problem. A better point in your favour might be the relative close relatedness of say the Aksenazi Jews.