A development bank is like a special bank that helps people and countries grow and become better. Just like how a piggy bank helps you save money for something you really want, a development bank helps countries and people save money to make big projects that will help them grow and be more successful.
For example, let's say that a country wants to build a big new road to connect different cities and make it easier for people to travel. This would be a very expensive project, and the country might not have enough money to pay for it all at once. That's where the development bank comes in – they can loan the money to the country and help them pay for the road over a long period of time.
Another thing a development bank can do is invest in new businesses that are just starting up. Starting a business can be very expensive and risky, but if a development bank believes in the business, they can provide funding to help get it started and become successful.
Overall, a development bank is like a special piggy bank that helps people and countries save money and make big projects or start businesses that will help them grow and be successful.