What made a rapid industrial growth possible during World War 1?

When countries called to war, this created the need for many, many, MANY weapons to be made. Thus, more industry was created.

There are basic needs for rapid industrial growth...

~Lots of different resources - renewable and non-renewable

~Inventions and technology -

~Interconnected transportation i.e. railways

~Lack of regulations - no governmental control

~Money... people who have money and want more (capitalists)

~Skilled workers - educated and/or extensive training

~Unskilled workers - people to do the dirty jobs for little money