Lesson No 3
Always make powerful allies
Pandavas had made powerful allies all over India. They had Panchalas through marriage with Draupadi, Rakshasas through marriage of Bheem and Hidimba, Magadh through marriage of Sahdev and Vijaya and many more. They didn't have any wealth or power but still won the battle because they had powerful allies.
Kauravas didn't have very powerful allies except old relations from far off places like Shakuni and Gandhara, Jaydratha and Sindhu and Bhagdutt and Kamboja. They had the power and the greatest empire but couldn't make many friends and allies and thus lost the war.