Title: Religion in ancient Rome.
Question: What did the expiation of a prodigy impose?

Title: Czech language.
Question: Who contributed heavily to the effort to standardize Czech orthography?

Title: Wood.
Question: What other modern material has joined composites, carbon fiber, titanium, and aluminum to replace wood in the manufacture of sporting equipment?

Title: Hunter-gatherer.
Question:
Initiative within the group depends upon what factor?