Final answer:
Sikhism is most likely a blend of Hinduism and Islam.
Step-by-step explanation:
Sikhism, a belief system that developed in the Punjab region in the 15th century, is most likely a blend of Hinduism and Islam. Inspired by Tamerlane's fusion of cultures and religious movements, Sikhism combined elements of traditional Hinduism with Islamic beliefs. Sikhs opposed India's caste system and became legendary warriors on the sub-continent.