"Induced" refers to a state that "caused" or "brought about". An "induced coma" is a coma that has been caused intentionally. (I don't know much about medicine, so I don't know why a doctor would induce a coma in a patient, but I guess there must be some medical reason for doing so!)
I think the word "fledgling" originally referred to a young bird (still in the nest, unable to fly yet). It can be used to describe people to mean "young" or "inexperienced". When used to describe an economy, it means that the economy is new, just beginning to grow, not yet mature, not fully developed.