What was the approximate size of each army mentioned in the text for the battle on the Kondurcha River?

Analysis:

The text provides numerical information about the strength of the armies. It states, 'Силы сторон были примерно равны / дом войске по 200–250 тыс. человек.' This translates to 'The forces of the sides were approximately equal / in each army 200–250 thousand people.' Therefore, each army had between 200,000 and 250,000 soldiers.

Answer: Примерно 200–250 тысяч человек в каждом войске