This department of the state's executive branch is responsible for providing information and services regarding tax matters and tax services.

The Internal Revenue Service

Explanation:

The Internal Revenue Service (IRS) is a branch of the Department of Treasury, and part of the Executive power. The function of the IRS is to collect taxes, enforce the tax code accross the U.S., and assit taxpayers in tax matters.

The IRS was born during the American Civil War, when the first income tax was established. It took its current name in 1953.

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