What prompted Frances Harper to write her pleading poem in 1871?

It seems you're asking about a poem by Frances Harper, but there's no specific information about a "pleading poem" from 1871 in the available data.

Frances Harper was a prolific writer, poet, and activist. Her poems often addressed the injustices faced by African Americans during the Reconstruction era. To pinpoint which poem you're referring to, could you provide more details? For example:

* The poem's title: Do you remember any part of the title?

* Its subject matter: What was the poem generally about? Was it about civil rights, education, or something else?

* Any specific lines: Do you recall any specific lines or phrases from the poem?

With more context, I can help you find the poem you're looking for and understand its historical significance.