Metaphors to compare equality to things the audience knows
Explanation:
When an object is compared to an action or a phase in which it is not applicable then it is called as a metaphor. In the except President Kennedy mostly conveys his points by using metaphors to compare equality to the audience so that it can be easily relatable.
Americans in the early period suffered from the inequalities done to them. Most often the black Americans were subjected to this type of activities.
Proud certainly has a positive connotation when compared to prideful because prideful implies that you are being arrogant and "stuck-up" about it while proud directs you towards happy for what you have accomplished and grateful that you were able to.
Answer:
It helps to come up with topics and ideas