because they have to do it
This was called the "Anschluss", thus pretending that Austria voluntarily joined Germany.
Italy is keen to be on the winning side in WW1. Therefore they took time to see which way the wind blew ! In 1915 they joined the Allies.
they were blamed for starting the war
Unrestricted submarine warfare by the Germans provoked American involvement, following American involvement other countries joined the melee.
the king wanted to learn how to "dougie"
The long term history of what is now the Mediterranean Sea.
Germany
It depens on the reasons for why you are joining .long term or short term?
Germany
Germany was hated by all of the countries in the world
4 YEARS 4 YEARS 4 YEARS
A 'detached' house is not joined to other houses.