"I thought Great Britain empire created Israel so they could own the Suez Canal!"
Sure. It is always falling short of reality to ascribe geopolitical events to a particular individual, both person and motive. It can also be said Lord Rothschild created Israel to fulfill Zionism's goal. Both of these are true, but more is true besides.
"Do you think Trump wants to unite Israel with Syria?"
I think Trump wants to pursue his masters' goals.
"How does the United States benefit from this?"
The US gaining Canada, Greenland, Mexico, and all of Central American clay is an obvious benefit to the US. More clay, more people, more economic activity, and more power for the bureaucracy to profit from administering.
Thanks!