Nobles and czars.
In the 19th century there were aristocracy and serfs.
Russia and China
russia
The new elite, the middle classes, and the working classes
The urban problems that developed in the 19th century included drinking as well as poor living conditions.
J.P Morgan
the major classes of materials
Russia's major transportation is railroad's.
== == The 19th century saw the invention of steam engines and internal combustion motors and their application to transportation in the form of steam ships, locomotives and the first automobiles. By the end of the century gasoline motors were sufficiently powerful that the Wright brothers were able to use one in the firct airplane in 1903. Large, practical electric generators were developed as were electric lights and telephones to put the energy to use. Popular democracy, trade unionism and, unfortunately,Communism, were all developed in the 19th century and had major impacts on the 20th.
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.