No.
Germany didn't 'enter' the Triple Alliance: it created it in 1879-82. The main reasons were fear of Russia and, to a much lesser extent, France.
companies enter into strategic alliance
Germany attempting to form a military alliance with Mexico
Germany attempting to form a military alliance with Mexico.
He took over Poland and the Soviet Union STILL didn't enter the war against Japan.
The alliance between Germany, Italy, and Japan
The alliance between Germany, Italy, and Japan
The alliance between Germany, Italy, and Japan
* Churchill, Roosevelt and Stalin agreed to form a United Nations * How to divide up Berlin between the Allies * Stalin agreed to enter war against Japan when Germany was defeated * Free elections in Poland
The USA joined in the war because the USA was part of the Triple alliance in the first place, and after Germany attacked the USA's submarines and battleships, they then joined the war in 1917.
In Dalaran's Alliance or Horde Building
Go to the 'Alliance' tab at the bottom of the screen. If you aren't already in an alliance, you will be given an option to enter a name for the new alliance you wish to create.