The time units used by scientists to divide
Earth's history are part of the geological time scale. The geological time
scale measures the timing and the relationships of specific occurrences in the
history of the Earth. It is used mostly by geologists and paleontologists. They
define the earth's history by studying the Earth's composition then connect
facts to major geological or paleontological events. <span>
<span>Through
the use of a geological time scale, scientists have found discoveries and put
together the missing pieces of the past. Probably, the most distinguishable event discovered through
the geological time scale is mass extinction of species.</span>
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On August 23, 1939–shortly before World War II (1939-45) broke out in Europe–enemies Nazi Germany and the Soviet Union surprised the world by signing the German-Soviet Nonaggression Pact, in which the two countries agreed to take no military action against each other for the next 10 years.
The Catholic Monarchs Isabella of Castile<span>, Queen of </span>Castile<span> and her husband </span>King Ferdinand<span>, King of </span>Aragon<span>, pursued a policy of joint rule of their kingdoms and created a single Spanish monarchy. </span>
Madame Thérèse Defarge is a fictional character in the 1859 novel A Tale of Two Cities by Charles Dickens. She is a ringleader of the tricoteuses, a tireless worker for the French Revolution, and the wife of Ernest Defarge.
