In order for a national convention to be called to propose an amendment to the constitution

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.

The second westward surge reached the: mississippi river, appalachian mountains, oregon territory