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The United States seriously researched the potential of entomological warfare (EW) during the Cold War. EW is a specific type of biological warfare which aims to use insects as weapon, either directly or through their potential to act as vectors. During the 1950s the United States conducted a series of field tests using entomological weapons.
The United States biological defense program—in recent years also called the National Biodefense Strategy—refers to the collective effort by all levels of government, along with private enterprise and other stakeholders, in the United States to carry out biodefense activities.
The federal government of the United States (U.S. federal government or U.S. government) [a] is the common government of the United States, a federal republic located primarily in North America, comprising 50 states, five major self-governing territories, several island possessions, and the federal district (national capital) of Washington, D.C ...
The United States federal executive departments are the principal units of the executive branch of the federal government of the United States.They are analogous to ministries common in parliamentary or semi-presidential systems but (the United States being a presidential system) they are led by a head of government who is also the head of state.
The United States government faced a major challenge from the nullification crisis in 1832. The Tariff of 1832 was passed, and while it was a reduction of the controversial Tariff of 1828, its passage still resulted in conflict.
The policies of the United States of America comprise all actions taken by its federal government.The executive branch is the primary entity through which policies are enacted, however the policies are derived from a collection of laws, executive decisions, and legal precedents.
Science education is a controversial subject in the United States. Several states banned the teaching of evolution in the 20th century, most notably the state of Tennessee with the Butler Act of 1925. It was followed by the Scopes Trial, in which the state of Tennessee accused Scopes, a high school teacher, of teaching evolution. Although he ...
This is the oldest form of city government in the United States and, until the beginning of the 20th century, was used by nearly all American cities. Its structure is like that of the state and national governments, with an elected mayor as chief of the executive branch and an elected council that represents the various neighborhoods forming ...