Standard federal history textbooks for 9th grade are usually authored by Danilov, Kosulina, Torkunov, or Medinsky. "Sokolova" might be the author of a highly specific workbook, a regional textbook, or a set of independent assessment tests.
Transitioning from rigid estates (nobility, clergy, peasantry, merchants) to a class-based society with the rise of the bourgeoisie and the proletariat due to the industrial revolution. gdz po istorii 9 klass sokolova sotsialnaia struktura
If you are looking for accurate information to answer a homework prompt about social structures for this grade, it is highly recommended to reference structured educational platforms like YaKlass History Grade 9 or search for lesson presentations on databases like Infourok rather than relying on generic GDZ portals. Standard federal history textbooks for 9th grade are
Highly prone to errors because online portals often confuse History with Social Studies (which also covers "Social Structure" in 9th grade but from a sociological standpoint). If you are looking for accurate information to