In the 19th century there were aristocracy and serfs.
Nobles and czars.
Russia and China
russia
The new elite, the middle classes, and the working classes
three.. :) ..
the major classes of materials
Lymphomas can be divided into two main types: Hodgkin's lymphoma or Hodgkin's disease, and non-Hodgkin's lymphomas.
Russia's major transportation is railroad's.
Major events in Russia's history include the establishment of the Kievan Rus' in the 9th century, which laid the foundation for Russian statehood. The Mongol invasion in the 13th century significantly impacted Russian development, followed by the rise of the Tsardom in the 16th century under Ivan IV (Ivan the Terrible). The Bolshevik Revolution in 1917 led to the establishment of the Soviet Union, which dominated much of the 20th century, and the dissolution of the USSR in 1991 marked a pivotal transition to the modern Russian Federation. Each of these events has profoundly shaped Russia's political, social, and cultural landscape.
Emperor, Nobility and Priests were the major classes of Aztec society.
Lenin made Russia a major power
The three major classes of cnidarians are hydrozoans, jellyfish, and sea anemones and corals.