Well, if you look close enough there is proof look at the way that the continents are shaped and some fossils have been found in 2 places but on completely different continents.
Answer:
At the most extreme, no attack on Pearl Harbor could have meant no US entering the war, no ships of soldiers pouring over the Atlantic, and no D-Day, all putting 'victory in Europe' in doubt
Explanation:
John Brown’s raid on the federal armory at Harper’s Ferry, Virginia (now West Virginia)
On december 16th, 1846, 15 of the members of the Donner Party strapped on makeshift snowshoes and tried to walk out of the mountains to try to find help. After several days trying to find help they were left starving and on the verge of collapse.
