The Louisiana Purchase treaty is important document because it shows the extent to which the United States was claiming land westward.
Political opponents of President John Adams opposed the Alien Enemies Act of 1798 because it stripped American citizens of the right to free speech, which blatantly violated the Constitution.
In June 1812, the United States declared war against Great Britain in reaction to three issues: the British economic blockade of France, the induction of thousands of neutral American seamen into the British Royal Navy against their will, and the British support of hostile Indian tribes along the Great Lakes frontier.
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Formaldehyde can be added as a preservative to food, but it can also be produced as the result of cooking and smoking. Formaldehyde also occurs naturally in the environment. Humans and most other living organisms make small amounts as part of normal metabolic processes. Formaldehyde is also a byproduct of combustion. When burning natural gas, kerosene, gasoline, wood, or tobacco, formaldehyde is produced. Automobile exhaust is a common source of formaldehyde in our environment. Tobacco smoking in the home is another source of the chemical in the indoor environment.
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