Final answer:
The fill-in-the-blank question is from the domain of English literature and involves choosing words that capture a sense of progress or advancement, fitting for high school level.
Step-by-step explanation:
The line "By _____ and _____ a broad way now is paved / To expedite your glorious march..." is a literature exercise that requires filling in the blanks with contextually appropriate words. Given that the texts provided seem to be extracts from different works, each celebrating progress or marking significant human activities or transformations, they convey a sense of advancement or moving forward, either culturally or socially. Inserts that might fit the context can be varied, but based on the themes of progress and development across the passages, words such as 'diligence' and 'endeavor' may capture the spirit of these works.