If History repeats itself we are all going to be grand. So stop worrying.The purpose of history is to understand why things happened and understand that history repeats itself.
Trump's presidency is a presidency for the super-rich and it will be an utter disaster for the working class in the US, for women, for minorities, for immigrants, for LGBT, for the environment etc.
You actually don't have to be a genius to be able to predict all of these things.
Theresa Maye and Donald Trump will save us all and even they turn out to be Hitler and Mussolini someone else will save us.
Only if history repeats itself, of course.