Final answer:
During WWI, the government partnered with businesses through lucrative contracts, seizing manufacturing facilities, and controlling the economy through agencies like the War Industries Board.
Step-by-step explanation:
The government partnered with businesses during WWI through a carrot-and-stick approach. They offered lucrative contracts to businesses to convert to wartime production, while occasionally seizing manufacturing facilities that were not being fully utilized. The government also worked to control the economy and ensure adequate military supplies through agencies like the War Industries Board.