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.
Answer: Central America is a land bridge connecting the North and South American continents, with the Pacific Ocean to its west and the Caribbean Sea to its east. A central mountain chain dominates the interior from Mexico to Panama. The coastal plains of Central America have tropical and humid type A climates.
Explanation:
Answer: B. Huayana Capac was the most successful ruler of the Inca.
Explanation:
A successful ruler can be judged by many things and in the past one very important metric for being successful was increasing the area of your country. People like Augustus, Alexander the Great and Genghis Khan were therefore very successful leaders.
In that same vein, Huayana Capac was the most successful ruler of the Inca according to this map. Under him, the Inca empire grew significantly as he added areas in modern day Chile, Bolivia and Argentina to the empire.
Answer:
I believe it is B:Helps pump water out of flodded boats and if thats not right then it should be D sorry if im wrong i just woke up and if i right then please grant me brainliest-Lucina
Explanation:
