Ais a specific prediction of how variables may be related; whereas a includes broad explanations and predictions concerning phenomena of interest.

A hypothesis is a specific prediction of how variables may be related; whereas a theory includes broad explanations and predictions concerning phenomena of interest. A theory is always backed by evidence but a hypothesis is only a suggested possible outcome. It can be tested and be proven to be right or wrong.

If this was about ww1 then the answer would likely be the zimmerman note or germany declaring unrestricted warfare on u.s. boats