In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
Q: There is no official state nickname. However, Missouri's unofficial nickname is the 'Show Me State', which appears on its license plates. This phrase has several origins. One is popularly ascribed to a speech by Congressman Willard Vandiver in 1899, who declared that 'I come from a state that raises corn and cotton, cockleburs and Democrats, and frothy eloquence neither convinces nor satisfies me. I'm from Missouri, and you have got to show me.' This is in keeping with the saying 'I'm from Missouri' which means 'I'm skeptical of the matter and not easily convinced.' However, according to researchers, the phrase 'show me' was already in use before the 1890s. Another one states that it is a reference to Missouri miners who were taken to Leadville, Colorado to replace striking workers. Since the new men were unfamiliar with the mining methods, they required frequent instruction.
A:
how did missouri get the name show me state