Final answer:
True, the Green Revolution started in Mexico post-World War II, utilizing high-response varieties of crops and modern agricultural techniques to significantly improve productivity, thus boosting the Mexican economy.
Step-by-step explanation:
The statement that increased agricultural efforts after World War II helped boost the economic situation in Mexico is true. Post-war agricultural developments included the introduction of the Green Revolution in the 1940s, which originated in Mexico and aimed to increase agricultural yields worldwide.
The revolution emphasized the use of high-response varieties (HRVs) of crops such as wheat and rice, as well as the expanded use of irrigation, artificial fertilizers, and pesticides. These technological advancements significantly improved agricultural productivity in Mexico and in other developing countries, contributing to economic growth.