Final answer:
During World War I, the role of the federal government expanded in various ways, including increased control over the economy and the implementation of conscription.
Step-by-step explanation:
The role of the federal government expanded in several ways during World War I. To support the war effort, the government took greater control over the economy, including the production and distribution of essential goods. The government set prices, standardized production, rationed goods, and assumed control over the development of food, fuel, and machinery. Additionally, the government implemented conscription to ensure a sufficient number of troops. These measures were aimed at creating a united home front and ensuring the success of the war.