Short answer: No.
Long answer:
We shouldn't force everyone to speak english, because while it is easier for people to communicate if they all speak the same language, there will still be some problems. Language allows us to have another way to differentiate between people groups, and is a part of the culture of each people group. Language in itself, because of it's diversity, can show what each culture believes in, what the set rules are, as well as how they interact, and using language, what they can build. Language also serves as a diversify of production of items. If everybody spoke the same language, while there will be technology advancement, we will not be able to see how different groups (language groups specifically) handle the same problems. While it is good to be at least bilingual, i believe that not everyone should speak english.
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Making a bandwagon appeal in a persuasive speech is an example of using unsubstantiated opinion.
Explanation: The bandwagon appeal is a fallacy because it argues in favor of something that is popular, and it is considered an unsubstantiated opinion because "everyone is doing it" is not valid evidence.
Cultural context, central ideas, and language are important to consider when identifying the purpose of a speech.
Explanation: Cultural context is the beliefs, behavior, and way of life that pertains to a specific cultural and is a key elements to speeches - it affects how you see the audience, and vise versa. Central idea is the main idea expressed in a speech, and language sets the tone of the speech.
