[1] From 1886, he worked for two years as an accountant at the Dudelange foundry; he then struck out on his own in 1888 to open an ironmongery in Esch-Alzette with a workshop constructing ovens, cauldrons, etc.
[1] Along with Michel Welter, he was one of the first people to engage in modern election campaigning in Luxembourg, by drafting and publishing a manifesto and giving speeches.
He described it as one of the richest and healthiest idioms of the Germanic tongue, containing a treasure trove full of valuable language gems and words.
The Chamber of Deputies voted on the question, whether Luxembourgish could be spoken in its sessions, and Spoo's proposition was almost unanimously rejected.
He was supported in this by the prime minister Paul Eyschen, and Nik Welter was tasked with writing the textbook Das Luxemburgische und sein Schrifttum.