What changes were made to the Uttar Pradesh Zamindari Abolition and Land Reforms Act, 1950 by the Uttar Pradesh Land Laws (Amendment) Acts of 1971 and 1974?
The Uttar Pradesh Land Laws (Amendment) Act, 1971 (Uttar Pradesh Act 21 of 1971) and the Uttar Pradesh Land Laws (Amendment) Act, 1974 (Uttar Pradesh Act 34 of 1974) made amendments to the Uttar Pradesh Zamindari Abolition and Land Reforms Act, 1950 (Uttar Pradesh Act I of 1951). However, the exact changes made are not specified in the given context.