This event would be Germany's sinking of an American vessel despite both nations being at a neutral diplomatic standpoint at the time. When the Germans sank the American vessel, without any actual reason to do so, this drastically coldened the relationship between the US and Germany.
Your teacher may have told you something specific that they want you to write here. If not, I would say it would be the glorification or demonization of any historical figure. Worshiping a certain figure by giving them constant praise and attempting to excuse every one of their immoralities, or showing a hatred of a certain figure by emphasizing their immoralities and attempting to belittle or invalidate their good deeds and accomplishments.
To make laws for the goverment
Israel seized control of the Gaza Strip and the Sinai Peninsula from Egypt, the West Bank and East Jerusalem from Jordan, and the Golan Heights from Syria. Hope that helped !
B) Executive Order
He federalized the national guard to enforce the law (Brown v. Board of Education).