Each element has its unique properties, each contain a different number of protons and neutrons giving it its own atomic number and mass number
Explanation:
silver is (uncountable) a lustrous white metallic element, atomic number 47, atomic mass 10787 symbol ag while iron is (uncountable) a common. inexpensive metal often black in colour that rusts is attracted by magnets and used in making steel
The correct answer is option A) "Frederick II took Silesia". In the Austro-Prussian War or Seven Weeks' War, the leader of Prussia King Frederick the Great resulted victorious over Austria. This changed the map of Europe because the kingdom of Prussia gained control of extensive new lands in Silesia, including highly industrialized and densely populated areas.
It is useful so that way people understand what happened years ago.
B. i believe. The U.s started that when we first became allies with china and wanted to keep up a good front
