In order to understand you questiion , i dont so i just wnt pioint
<span> Columbus was an </span>Italian explorer, <span>born in 1451, in the Republic of Genoa (Italy). </span> He originally was determined to show that he could get to India by sailing west across the Atlantic (as opposed to the usual route going round Africa and then sailing East).
<span>He discovered the "New World" of the Americas on an expedition sponsored by King Ferdinand of Spain in 1492.</span>
Railways made communication easier, this helped spread news. It also made transportation easier.
Answer:
Over the centuries, the Great Wall has been built and rebuilt for three main purposes: as kingdom border defenses, to defend China's northern border, and for tourism.
Explanation: