In the old times, it was used as a word for a pirate or a robber, while in the modern era, it is someone who engages in long speeches in order to prevent a bill from being voted. He essentially steals time from the parliament.
I don't understand what you mean by the term "middle kingdom." In the Tang Dynasty of China, they considered themselves to be the Middle Kingdom because they saw themselves as the center of the earth, if that helps.
Use the slider to change the value of k.
Positive values of k shift the graph <span>✔ up</span>.
Negative values of k shift the graph <span>✔ down</span>