Complex sentence: The association was founded in 1968 by a group of French doctors specialized in pediatrics to help children in Vietnam suffering from the war.For over 40 years l'Appel has led humanitarian projects around the world, developing schools and hospitals in countries in need.
Split into simpler sentences: The association was founded in 1968 by a group of French doctors specialized in pediatrics to help children in Vietnam suffering from the war. Since then l'Appel has led humanitarian projects around the world, developing schools and hospitals in countries in need.