What nation informed american authorities about the zimmermann note?

It was the British.  They intercepted the Zimmerman note where they offered to help Mexico reclaim territories that it lost to the United States if they support Germany in the war against the Allies.  Before this development, the U.S. tried to keep itself out of the war. But when the British revealed this info along with the sinking of the Lusitania caused by unrestricted German warfare in the Atlantic Ocean, America joined the war on the side of the Allies.

the church governed the society after the empire fell.   constantine took charge of rome and ended the confusion which had over religion and made christianity as the only religion and that started ruling the roman empire. he also divided the empire into two and fortified the eastern part.   he ruled the eastern part.