The Berlin Conference of 1884<span>–85 was a </span>meeting<span> between European nations to create rules on how to peacefully divide Africa among them for colonization. The </span>conference<span> was convened by Portugal but led by Otto von Bismarck, chancellor of the newly united Germany.</span>
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
Answer:
1 and 4?
Explanation:
i can really see or understand too much of the question, but 1 and 4 seem right, keep waiting for another person to answer just in case.