The Act came into force on:

The correct answer is 21 Jun 1912. The commencement date of an Act is a crucial legal detail, as it marks the point from which the Act's provisions become legally binding and enforceable. For the specific Act referenced in the question, the date it officially came into force was the 21st of June, 1912. Understanding the exact date of commencement is fundamental for accurate legal interpretation and application. Any other date would be incorrect and would lead to a misapplication of the law's effective period.