The Brahmo Samaj, founded by Raja Ram Mohan Roy in 1828, was a reform movement in India that sought to promote monotheism and eradicate social evils such as caste discrimination and idol worship. As with any religious or social movement, the Brahmo Samaj faced conflicts and opposition from various groups.

One of the major conflicts faced by the Brahmo Samaj was with orthodox Hindu groups. The Brahmo Samaj rejected many traditional Hindu practices, such as idol worship and the caste system, which were deeply ingrained in the society. This led to tension and opposition from orthodox Hindu leaders and followers, who saw the Brahmo Samaj as a threat to their beliefs and way of life.

Another conflict faced by the Brahmo Samaj was with the British colonial government. The movement was seen as a challenge to the British policy of non-interference in religious matters. The British also feared that the Brahmo Samaj's emphasis on monotheism and social reform could lead to a unified and potentially rebellious Indian society.

The Brahmo Samaj also faced opposition from the Muslim community. The movement's emphasis on monotheism and rejection of idol worship was seen as a direct challenge to the beliefs of the Muslim community. Some Muslim leaders even accused the Brahmo Samaj of being a front for Christian missionaries, further straining the relationship between the two groups.

Despite these conflicts, the Brahmo Samaj also had some positive interactions with other religious groups. The movement was open to dialogue and cooperation with other reformist movements, such as the Arya Samaj and the Aligarh Movement. They also had friendly relations with some Christian missionaries who shared their goal of social reform.

In conclusion, the Brahmo Samaj faced conflicts with various religious groups due to its rejection of traditional Hindu practices and its challenge to the British colonial government. However, the movement also had some positive interactions with other reformist movements and Christian missionaries. Overall, the Brahmo Samaj's efforts towards social reform and promotion of monotheism left a lasting impact on Indian society and paved the way for future reform movements.