there were no religion combined to make Sikhism but it was the Hindu religion turned into Sikhism as there was no one to protect hindus from Muslim emperor in India.
so guru gobind singh ji made a new religion who will fight against the injustice by anyone on anyone and will protect other reigious communities.
Sikhs were given different identity so that they can't neglect themselves from bring a soldier of guru gobind singh ji.
that is why all religions are allowed into Sikhism. there is no religious restrictions in Sikhism on anyone of any religion.
SIKHISM
The two main religions of India are Hinduism and Sikhism.
No, Sikhism is part of Dharmic religions along with Hinduism, Buddhism, and Jainism.
All religions.
Sikhism
Yes, along with Sikhism and other religions.
Sikhism is a religion exactly how any other religion is a religion.
Sikhism
Hinduism, Islam, Sikhism, Christianity are main religions of India.
Jainism and Sikhism
Asia
Jainism, Buddhism, Sikhism