Final answer:
The presence of similar architectural elements like pyramids and mummies across ancient civilizations does not conclusively prove a direct descent or common source between the Maya and Egyptians, and the claim remains a hypothesis.
Step-by-step explanation:
The assertion that the presence of obelisks, pyramids, and mummies on both sides of the Atlantic indicates that the Maya and the Egyptians descended from each other, or that they had a common source, is not conclusively proven as fact and remains a hypothesis. There is indeed a fascination with similarities in architectural forms like pyramids found across different ancient civilizations; however, it is essential to note that these structures arose independently in different cultures as a result of convergent evolution in architecture. The development of similar structures does not necessarily imply direct contact or shared ancestry.
There has been extensive research on the genetic origins of humans, suggesting that all humans likely descended from Africa. Cultural contact between civilizations, such as that between ancient Egypt and Meroe, is well-documented, showing influence in architecture and religion. However, the relationships between civilizations like the Maya and Egyptians are more speculative, and the theory by Donnelly does not provide conclusive evidence to validate such a direct connection.