See the link below
your gay
What evidence did the archaeologist find to suggest that the Tainos existed
a land bridge was created between Siberia and Alaska
the castles
postulate
We know Cleopatra existed because of the written evidence from the ancient writers.
Archeological evidence. Pyramids, statues, foundations, pottery etc.
Read the Bible and believe it.
Evidence that existed or occured within the selected time frame you're looking at.
fossels.
food
The writings of contemporary historians.