I believe that the Korean War started when the North Korean Communist army crossed the 38th Parallel and invaded non-Communist South Korea.
The most common form of rule in world history has been monarchy (from the Greek <em>monos</em>, "one," and <em>arche</em>, "power"). It is an unipersonal, hereditary and lifelong form of government. The Head of State is the king (or queen), the prince or the emperor. Although monarchy was at first absolute (the ruler had absolute or total power), it then evolved into a limited form (the ruler needed the help of the most powerful members of society) and finally into a constitutional form (the ruler is primarily a symbolic figure and the nation is governed by a parliament).
At present, the monarchy is the form of government of a few countries around the world, such as Spain, England, Japan and Denmark, to name a few.
World War 2 started in 1939, when Nazi Germany invaded Poland
Answer:
Geochronology. The two igneous clasts—an andesite clast and a metatonalite clast—separated from the upper Pottsville Formation yields an age of ∼323 and ∼295 Ma, respectively.
