Why Was It Necessary for the Federal Bureaucracy to Expand

Why was it necessary for the federal bureaucracy to expand during the early 1800s?

A) A series of economic recessions created the need for government intervention to provide assistance to citizens.
B) The United States began to acquire more territories, which presented the need for more government.
C) Booming trade created a need for more agencies to regulate trade routes and negotiate terms.
D) The abolition of slavery increased the citizen population, which required a larger government.