Answer:
a. mobile phones
Explanation:
One day some engineers decided to change the course of history. Thinking of a way to make communication more efficient and easy, they had the brilliant idea of creating a system that would be capable of communicating between cordless phones. The idea was not bad, but the technology of the time did not help much.
The real history of the mobile phone began in 1973, when the first call was made from a mobile phone to a landline. It was from April 1973 that all theories proved that the cell worked perfectly, and that the cell phone network suggested in 1947 was designed correctly. This was a not very well known moment, but it certainly was a fact marked forever because it was the moment that facilitated communication for most people through the creation of the mobile phone.
1) To warn European Powers not to get involved with the affairs of the Western Hemisphere. That the Western Hemisphere would not further be colonized by Europeans, and the U.S. would leave existing Colonies alone; not involved in their International affairs or wars.
2) President James Monroe wanted to make sure that Europe did not take Spain's colonies, as many were on the verge of their own independence. Prussia, Austria, and Russia had formed the Holy Alliance with the goal of defending monarchical government. It was a precaution really.
3) The United States was prosperous, as we no longer had to worry about wars, we could focus on trade to gain a better economy. Also the Europeans benefited from the fact that they could not stand another war and win, due to previous wars which had left them disorganized and slowly building back the economy.
hope this helps
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Answer:
He relied on Chinese advisors, rather than Mongols from his own tribe, to help him rule.
Explanation:
Kublai Khan was a Mongol great military leader, the grandson of Genghis Khan. He conquered and ruled the whole of China since 1279, founding the Yuan dynasty. He vanquished the Song dynasty.
As it has happened several times in the long history of China, he and his people adopted many Chinese customs and cultural norms and practices; Chinese culture was advanced and more sophisticaded than Mongol culture. He was quite benevolent, accomplished some great public works, and promoted religious tolerance. He relied heavily on Chinese advisors in his court.
I think it's c people began to control their physical environment