8:47Why was this Sea in North America on Old Maps?
Save referenceCuriosity Gap
You know there's no inland sea in western North America. Yet this old map has a huge one, outlined in teal with a red arrow on it. The question you're left with is why mapmakers drew a sea that isn't there.
The plural 'Old Maps' says this was a shared belief, not one mapmaker's slip, and 'this Sea' only makes sense with the arrow in the image.
The old French map itself is the evidence that someone really drew this sea, and the red question mark and arrow point you straight at the oddity.
When your topic is something people once believed that turned out wrong, show the original document with a single arrow at the error. Ask why in the title and let the old source show it really happened.
Point one arrow at the error in the original source.
Apply this pattern to your next video.
Bring the reference into a packaging brief, then decide what your title and thumbnail should each communicate.