news for you board

That "century" ended long AGO when the USA repeatedly undermined the institutions it helped create after WWII - Iraq was the most egregious but many others equally important have played out since Obama came to power -

 including the 500 drone attacks he ordered which involve extra judicial killings (with collateral damage), 

their refusal to sign the ICC, 

using NATO for out of area ops to impose regime change in Libya -

 undermining governments in the middle east, 

turning a blind eye to genocide in Rwanda and South Sudan while instigating civil war in Iraq and Syria

being the lone hold out in condemning Israel's illegal occupation  (and nuclear inspections)

all these things add  up  

Trump didn't start this nor will he finish it

 the USA is the architect of its own demise