The history of Berlin starts with its foundation in the 13th century. It became the capital of the Margraviate of Brandenburg in 1417, and later of Brandenburg-Prussia, and the Kingdom of Prussia. Prussia grew rapidly in the 18th and 19th century, and formed the basis of the German Empire in 1871.
It is called the compound microscope.
Chlorine, Oxygen, Bromine and Argon are obviously a gas. The substance that is most likely dense is Silver. Hope this helps.
C . A gps reciever calculates its position by precisely timing the signals sent by gps satellites high above earth