What is associated with: a plow is depicted on the seal of this cabinet department created in 1862?

What is referred to by 'a plessor'? Based on the clue 'a plethora of hiking riding trails are in this vi...', what is the answer? Based on the clue 'a plot twist in an oscar wilde play hinges on her ...', what is the answer? Based on the clue 'a plotted revolt to overthrow a government execute...', what is the answer? Based on the clue 'a ploy used to prod somebody into compliant behavi...', what is the answer? Based on the clue 'a plum achievement or a plume achievement', what is the answer? Based on the clue 'a plum thats suffering from dehydration', what is the answer? Based on the clue 'a plumber uses one to clear out your pipes', what is the answer?