Before revision: Brady and Kaplan focused on the country Estonia, where they posited two groups: "Estonians," and one that they call the "Slavs," a collective group of Russians, Ukrainians, or Byelorussians .
After revision: Brady and Kaplan focused on the country Estonia, where they posited two groups: "Estonians," and one that they call the "Slavs," a collective group of Russians, Ukrainians, or Belarusians .