Let's examine each statement in the context of Jainism and the life of Bhagwan Mahavira:

1. Bhagwan Mahaveer established assembly halls called “Samavasarana” to spread his knowledge among the common people.

- Correct with clarification: In Jain tradition, after attaining Kevala Jnana (omniscience), Tirthankaras including Mahavira delivered sermons in a divine assembly called "Samavasarana." However, it is believed that the Samavasarana is not a physical hall established by Mahavira, but a miraculous, divine assembly that appears wherever a Tirthankara attains omniscience and delivers sermons accessible to all beings (humans, animals, celestial beings).

1. Eleven well learned ascetics became Mahaveer's chief disciples.

- Correct: Mahavira had eleven chief disciples known as the "Ganadharas." They were well-learned ascetics who played a crucial role in spreading his teachings.

1. Mahaveer propounded a religion called the “Sarvodhaya’ Thirth” that preaches the welfare of all living beings.

- Incorrect: Mahavira did not propound a religion called "Sarvodhaya Thirth." He was the 24th Tirthankara of Jainism, which indeed preaches the welfare of all living beings through principles like Ahimsa (non-violence), but the term "Sarvodhaya Thirth" is not associated with Mahavira or Jainism.

Summary:

• Statement 1: Correct (with clarification about the nature of Samavasarana)
• Statement 2: Correct
• Statement 3: Incorrect

Therefore, statements 1 and 2 are correct regarding Bhagwan Mahavira.