What was one effect of the expansion of the federal government during World War I? The efficiency of the federal government increased significantly as more agencies were established. The military gained both domestic and international power. Many social service agencies came to the aid of the poor and elderly. The federal budget went from less than $800 million in 1916 to $18 billion by 1919

One effect of the expansion of the federal government during World War I is that the federal budget went from less than $800 million in 1916 to $18 billion by 1919.

Explanation:

Although it was easier for the federal government to draft men for World War I, it couldn't easily get most of the resources needed for war like food, arms, ammunition, goods and services, and equipment. Therefore, it had to devise a means to acquire sufficient revenue: it increased federal outlays from $800 million in 1916, to $12.7 billion in 1918, and later to $18.5 billion in 1919.

The efficiency of the federal government increased significantly as more agencies were established.

Explanation:

During World War I, the federal government of the United States saw an incredible expansion that allowed it to increase its size, scope and power. Many industries were nationalized, including most of the shipping industry, along with the railroad, telephone and telegraph. The Federal Reserve System increased its power significantly. Finally, many new government agencies were established, which allowed for a more efficient federal government.