Need intoduction on this topic for argumentative essay ASAP parent has no right to control children above 16.​

Well, in the US, if you follow the law, then the parent(s) have all the right to 'control' children of 16 and 17.

Children hit maturity, and become adults, at the age of 18. Before that, they are still under the 'control' of their parents. That is simply what the law states. There is no argument on whether the child must listen to the parent when they are younger than 18.

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.