In this context, provided acts as a conjunction because it connects two independent clauses and sets a condition similar to the word ‘if’.

১. Adverbs modify verbs or adjectives, but here the word links ‘I shall help you’ and ‘you obey me’.
২. Although ‘provided’ can be a past participle of the verb ‘provide’, its functional role here is transitional.
৩. As a conjunction, it is often followed by ‘that’, though ‘that’ is frequently omitted.

অতিরিক্ত তথ্য: Common conditional conjunctions include: if, unless, and provided that.