The article explores whether economic and financial integration help countries grow economically. It looks at studies on how joining economic unions or integrating financially affects the economy. Most research supports the idea that economic integration boosts growth through factors like saving money, increasing productivity, trading more, and linking financial systems. However, the impact of financial integration on growth is still uncertain. Overall, economic integration seems to be beneficial for economic growth, but adopting a common currency doesn't seem to make much of a difference.