What are internecine wars?

Internecine wars – wars between cities or princes, feudal lords. To understand what internecine wars are, you need to understand the meaning of this expression. It can be best explained as follows:
fragmentation leads to the formation of a number of small and independent states. Each of them has its own ruler with its own ambitions and interests;
contradictions between rulers lead to wars between them. Often such wars occurred after the death of one of the rulers. With imperfect inheritance law, each local ruler could lay claim to the land of the deceased. This led to large-scale wars in which coalitions and alliances were created;
wars between the rulers of parts of the same country were called internecine wars. They brought ruin to traders and farmers. Meanwhile, internecine wars continued for centuries in Europe and Russia, stopping only for short periods.
Thus, internecine wars are the prototype of civil wars. They occur between people of the same nationality, representatives of the same culture. And they arise between the rulers.