Parents should teach things regardless the manners. They should not discrimminate between the two, because both the genders deserve equality and etiquettes to be learnt.
In addition to that, parents should not only motivate their son’s to eat proper meals but also should pay attention to their daughter’s nutritional values. Because both need nutritions in order to have a healthy living.
Its the coformation theory, stating that the earth and moon were both made around the same time from a small dust particle
It depends on what type of government the country is. Take an example, Great Britain (England, Britain, whatever it is called.) is a monarchy, which means that they have royal families... like how we have the president. (in the U.S at least) It can also be dependent on what the country decides to do, or the president decides. I hope this helps!