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Based on your knowledge of word parts what does the word intervene mean

What is the purpose of freewriting during the research process? to develop ideas for poems to create a journal to submit with a research paper to brainstorm initial ideas for a topic to extend the research process time line o

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.