Answer: The most common tones produced by sirens in the United States are "alert" (Steady) and "attack" (wail). ... Attack Warning – A 3 to 5 minute wavering tone on sirens or a series of short blasts on horns or other devices. The Attack Warning signal means detection of an actual attack or accidental missile launch. The sirens are usually for the people surrounding the area to let them know that they need to evacuate immediately.
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~Princess <3
The question, "Why was the declaration of independence written?" is answered by the very Declaration of Independence itself. The document has a preface that says it is a very important document, with a purpose. It equally says that because every other nation needs to understand why the New World British Colonies assumes a status that makes it equal to every other nation, this document will outline all the grievances held against the Crown by the Colonies.
<span>Most of the content in that document is a list of the reasons behind the Colonies' declaration of their independence from the British rule. When you read the document, you will understand the major reasons why it was ever written. It is open with all its reasons. No mystery of guessing is involved. You will find your answer once you read it. What you will find there will surprise you.</span>
