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.
Their geography made growing crops difficult. The land was mountainous. They were however, known for growing grapes and olives.
Sparked by the arrest of Rosa Parks on 1 December 1955, the Montgomery bus boycott was a 13-month mass protest that ended with the U.S. Supreme Court ruling that segregation on public buses is unconstitutional. The Montgomery Improvement Association (MIA) coordinated the boycott, and its president, Martin Luther King, Jr., became a prominent civil rights leader as international attention focused on Montgomery. The bus boycott demonstrated the potential for nonviolent mass protest to successfully challenge racial segregation and served as an example for other southern campaigns that followed. In Stride Toward Freedom, King’s 1958 memoir of the boycott, he declared the real meaning of the Montgomery bus boycott to be the power of a growing self-respect to animate the struggle for civil rights.
They were able to form a new colony and become fully independent
