 Nurhaci's early relations with the Mongols tribes was mainly an alliance.After Ligden's defeat and death his son had to submit to the Manchus, and when the Qing dynasty was founded, most of what is now called Inner Mongolia already belonged to the new state.The Khalkha Mongols in Outer Mongolia joined in 1691 when their defeat by the Dzungars left them without a chance to remain independent.