Correct answer choice is :
2) The Soviet Union’s surprising launch of Sputnik into Earth’s orbit
Explanation:
The Space Race leads to the 20th-century contest among two Cold War opponents, the Soviet Union and the United States, for dominance in spaceflight ability. The Space Race starts in 1957 and the U.S. and the Soviet Union are clasped into the Cold War. The Soviet Union has just begun the world's first satellite, Sputnik. Afraid of Soviet military control of space, the Americans immediately ready a rocket.
Earth's magnetic field was reversed than today's magnetic field, 65 million years ago.
Answer: reversed
<u>Explanation:</u>
The present North and South pole on the geographical region above Earth crust is opposite beneath the same as North to be South and South to be North pole. Before 65 million years, Earth polarity was same beneath as currently above Earth's crust. It reversed and the Earth faced the mass extinction.
The magnetic field of the Earth was opposite to what it is found today, 65 million years ago, which is considered to be the time for mass extinction. It has been found that the magnetic field which consist of polarity as north and south is opposite to be what is found on the geographical land to the one found below the Earth surface.
In much of the territory formerly occupied by the Antigonid Kingdom, modern states of Turkey, Syria, and a small part of modern Greece emerged. This area was where Macedonia was, being a Hellenistic dynasty, takes its name by Antígono, who in the distribution of the kingdom of Alexander the Great, after his death, Antígono was named the ruler of Macedonia (fatherland of the family of Alexander the Great and of many of his generals) and the said kingdom. The Antigonid Kingdom, almost occupied the entire territory of present-day Turkey, which means that the Ottoman Empire was the most important state (1299-1923) or kingdom that succeeded it.
The February Revolution was the first of the two revolutions that took place in 1917 and that ended for good the tsarist Russian Empire.
The revolution emerged near Petrograd (current St.Peterburg) that was the capital of Russia at the time. Russian people was disatisfied with the monarchy and the food rationings. Mass demonstrations were celebrated and there were violent confrontations against the police and gendarmes that remained loyal to the tsar (while the army sided with the revolutionaires). <u>This conflict led to the abdication of Tsar Nicholas II and to the end of the Romanov dynasty. </u>
Perhaps the greatest transportation development that took place during this time was the creation of the railroad, which many travel and the transfer of goods far easier and therefore far cheaper.
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