This boosted the profile of the union, which had 3,000 members by 1839, when it appointed a secretary for the first time.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: This boosted the profile of the union, which had 3,000 members by 1839, when it appointed a secretary for the first time. ### Response: .