Major themes that connect myths across different civilizations include creation, flood narratives, and the duality of good vs. evil. These themes resonate universally, illustrating fundamental human concerns and experiences. Creation myths explore origins, while flood stories often symbolize purification or renewal, reflecting societal fears and desire for survival. The balance between good and evil emphasizes moral choices faced by characters, mirroring real-life dilemmas. These shared themes illustrate how mythology serves as a cultural lens through which civilizations articulate values, beliefs, and collective experiences throughout history.