Plus the fact that Sumaria has a myth similar to the tower of Babe
Has it ever occurred the reason these myths are similar is because the Bible cribbed it from them? Just saying. That's a possibility.
Central America also has a story of a tower of babel that is close to what the Bible states.
Where in Central America, and who did it belong to? I'm pretty sure there was a lot more than just one group of people in Central America.
So if you look at the oldest known Sumarian language (around 2000 B.C.) and the oldest known beginning of Egypt (around 2686 B.C.) they both fall within very close proximity to the end of the flood which was around 2349 B.C
Couple things.
First, I'm not sure where you got those numbers, but they're wrong. Egyptian civilization goes back further than that.
Ancient Egyptian Timeline
Sumerian language - Wikipedia, the free encyclopedia
Second, even if that was when Egypt began - and it's not - that gives Egypt only 337 years to develop a culture, religion, technology and society that are so far apart from one another that nobody would think they have roots in the Abrahamic tradition.
The Toltecs also have a story of a deluge, people building a tower and then their languages were confounded and they scattered.
Let's explore that story about the deluge.
One of the Tezcatlipocas (sons of the original dual god) transformed himself into the Sun and created the first humans to show up his brothers. The other gods, angry at his audacity, had Quetzalcoatl destroy the people, which he did with a flood. The people became fish. [Leon-Portilla, p. 450]
So, yeah. Polytheistic. The Sun is god. Happened not because of anything man did, but because the gods are jerks and they didn't like people. Ends with everyone becoming fish.
...but yeah, it does mention a flood. It's not like floods happen all over the world and would be very devastating to people who can't even begin to fathom why it's raining so much.
Also, I can't find any source for the tower thing. At least not one that isn't a Christian website and doesn't bother to show an independent source. But hey, let's take that at face value and ignore the fact the Toltec share absolutely nothing else with Noah's culture. A couple of myths must mean they're connected.
This can't be a coincidence across the entire globe
Really? It can't? Countless myths around the world, cultures sharing stories and crossing over and mingling for thousands of years, and it's just impossible that there might be some mixing? Heck, it's not even possible that some of the mythmakers might have had similar ideas?