Zimmerman telegram
Germany was attempting to get Mexico as an ally. The US was headed for Europe in '17; didn't need to have to fight Mexico so close to home.
Romania was an ally of Germany.Romania was an ally of Germany.
The Austro/Hungarian Empire was Germany's ally in WW1
Zimmerman
In the WW2 Romania was an ally of Germany between 22.06.1941 and 23.08.1944.
Germany
Austria-Hungary was not a particularly useful ally from Germany's point of view.
1. The US was entering WWI. 2. The Zimmerman telegram was intercepted; Germany wanted Mexico as an ally. To negate that...the US withdrew any excuses for any hostilities with Mexico; by withdrawing from Mexico.
America never joined/allied with Germany in World War I and II. America was an ally and Germany was an axis. But America did join partially because of Germany. Germany announced that they would use their submarines on anyone and America felt threatened and decided they needed to take action. Germany also contacted Mexico and asked Mexico to help Germany defeat America.
Germany wanted Mexico to fight with the u.s. so the u.s. wont help the allies.
Axis