D. the United Kingdom. started the concept of a parliamentary democracy.
I think the answer to this question is mountains
Answer:
Protocol.
Explanation:
As the exercise details, a protocol is a set of rules that determine what a layer would do and provides a clearly defined set of messages that software at the layer needs to understand. The word itself is related to a system of rules and acceptable behaviour. Therefore, the meaning of it in a corpus of programing is understandable.
The correct answer is letter B. The movement of the center of population of the US was from South to North. This is because ports started to open in the North allowing more industries to open and the demand for labor was high. It was an eye-opener and an opportunity for people of the South hence there were great migrations that happened in the history of the US.
