Expand the reasons and essence of political fragmentation in Russia in the XII-XIII centuries.

The reason for the fragmentation of Russia during this period was the struggle between the princes for power and land. So in the period from the 12th to the 13th century, Kievan Rus was divided into many separate principalities, which were constantly at war with each other. The result of this fragmentation was the weakening of Russia.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.