The manufacturing industry is a really important sector in the United States as it helped build the middle class after the second World War. In the early 21st century accounted for 10% of corporate profits. Unfortunately the employment in this sector is estimated to decline in the coming years.
By a war of both of the systems
The Entente-UK, Canada, Australia, British Malaya, British Raj (India) ect
The central powers- Germany, Austria-Hungary ect