Yes success would be Impossible with division but thats what Trump pushes and as long as people don't want to call wrong,wrong,then he will continue leading people Into darkness until It dawns on them,this Is wrong.
Trump does push division. There is no doubt about that. His entire Campaign was based on division. He has alienated the majority of the Media. He has alienated every Democrat in Congress. He has alienated pretty much every Democrat/Liberal in America. He has alienated the Hispanics. He has alienated the Muslims. He has alienated the majority of Blacks. He has even alienated some of the Republicans in Congress. And, this is just in America.
Now, to be fair, Obama and the Democrats are not now, or have ever been any better. They too have built their kingdoms through division of the peoples.
When a Politician (any Politician) calls for "unity," it is because they are the ones in the Majority in Congress, or in the White House. THEN, and only then, do they call for the Nation to unite for the "common good."
And it does not matter if they are Republican or Democrat.
I am hard pressed to remember a time in our Nation's History (since the Civil War) when we have been more divided than we are today. In my opinion, our Nation has suffered a permanent fracture/split, and will never be united completely again. Only if some horrific event unfolds.......man made or natural.......will some sense of unity be realized, but, even then, once the danger is passed, the unity will disappear quickly.
Deserved or not, for better or for worse, Trump has become the Poster Child for the division of our Nation.