Explique porque as ideias socialistas tornaram-se influentes entre os operários e os camponeses russos entre o final do século XIX e o início do século XX.

The feudal system was still in place in Russia at the turn of the century.

Explanation:

My portuguese isn´t really good but I assume that the question is about how socialist ideas entered the Russian society, especially among the workers and farmers, at the end of the 19th and the beginning of the 20th century.

In the 17th and 18th century Russia became a huge empire and, in effect, a world power. Nevertheless, it remained a country of poor farmers, while the czars and nobles enjoyed the luxuries of an outdated feudal system.

So in the early 1900s Russians began demanding improvements. There were some changes but the civil unrest grew and came to a head at the end of the first world war. Enter the Russian Revolution.