What can be inferred from the presence of serfdom in Russia in the 1800s was that Russia was not as developed as the rest of Europe.
This referred to the form of relation between the Russian peasants and nobility in the 17th century especially in the central and southern of the Tsardom of Russia.
This shown that Russia was not as developed as the rest of Europe during the period.
Therefore, the Option 2 is correct.
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