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.
I hope this helps
~Princess <3
The correct answer is A.
Elections are a <em>nonviolent method</em> by which power dynamics in the government change and they make a fundamental contribution to democratic governance.
Any democratic government is conducted through its representatives. Elections enable voters to select leaders and to hold them accountable for their performance in office. Regular and periodic elections solve the problem of succession in leadership as new/better leaders can always be elected through voting.
In democracies,<em> people have a say </em>when choosing a government. People conduct elections to safeguard their freedom and rights. The<em> mass participation of citizens</em> ( edible voters ) guarantees a peaceful change in government, and is an example of trust of the citizens in the elected government.
Social protection only for peaceful citizens
Gutenburg's printing press was such an important invention, because before he invented it, people would either write stuff all by hand, or make some stamping system. If Gutenburg hadn't invented the printing press, we wouldn't have printers to print things out!
Extra:
Gutenburg designed the printing press in a town called Strasbourg, France. he built the actual thing in Mainz, Germany.
