The only difference between the two is the action in which it was done. They are still similar because you are physically hurting another individual.
The best and most correct answer among the choices provided by your question is the second choice which is "railroad tracks."
<span>By 1860 the Midwest and the East were united by a network of railroad tracks.</span>
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Sputnik I was the world's first ever artificial satellite that launched by the Soviet Union in 1957. This marked the start of the "space age" which pushed the race between the US and the USSR in the field. Because of this "competition", many scientific discoveries were made to study and even travel to outer space.
One of the most famous<span> people alive during this time was </span>Leonardo da Vinci<span>. He was most </span>famous<span> as a painter, but he was also a scientist, engineer and mathematician. </span>Leonardo<span> is </span>called<span> a "</span>Renaissance man". Another "Renaissance man<span>" was Michelangelo, who was a sculptor, painter, architect and poet.</span>
