The study of world history is a huge undertaking. Luckily, it is easy to break into sections and you can spend days, weeks, months on any one of them.
No matter what part of history you study, read more than one account of the same event.
A great way to develop creative thinking and deduction skills is to play ripples of change. Talk about the changes caused by-the use of fire, domestication of plants and animals, invention of pottery, paper, cars. This can be used in a variety of situations and is good for getting more questions going-a curious mind is a growing mind, be it an 8 year old child or an 80 year old adult.
Foreign Folk Songs
Eurpoean and American Folk Songs by Date