The effects of population growth, environmental quality, and trade openness on economic growth were studied in major developed and developing countries from 1960 to 2013. The researchers found that trade openness and economic growth have a two-way relationship, while population growth positively impacts economic growth in developing countries. Additionally, there is a one-way relationship from population growth to economic growth and from trade openness to economic growth. This study provides valuable insights for policymakers and the people of these countries, highlighting the importance of these factors in driving economic growth.