Solution:The 42nd Constitutional Amendment Act of 1976 is one of the most significant amendments to the Indian Constitution. It is often referred to as the "Mini-Constitution" due to the extensive changes it made.The 42nd Amendment Act, also known as the "Mini-Constitution," was enacted in 1976 during the Emergency period, significantly altering the Indian Constitution by adding words like "Socialist," "Secular," and "Integrity" to the Preamble and introducing fundamental duties