Answer:
well, first off, you would be treated as a minority, affecting how you think about you yourself, bringing down your confidence. you would probably feel sad, because if only a few other people know it, communicating would be hard. Like, when you go to the grocery store or out shopping, if you needed help with something, how would you ask? or a really bad scenario would be if you went to the ER, and your health problem wasn't obvious and it was internal. That could be dangerous.
It is independent because it expresses a complete tought.
Speeches.
Speeches can persuade someone, and they can argue on which ones wrong. Speeches can also give out informative information, for example you can tell someone that an animal can be in danger. Lastly, Special Occasions. They are used on ceremonies and other special days.