Final answer:
The sentence "During the Renaissance, a period after the Middle Ages, several important inventions changed society." best combines the given sentences while preserving historical accuracy and emphasizing the Renaissance advancements.
Step-by-step explanation:
The best way to combine sentences A and B while accurately reflecting the historical timeline and emphasizing the cultural and technological advancements of the Renaissance would be: "During the Renaissance, a period after the Middle Ages, several important inventions changed society." This combination maintains the chronological order and highlights the significance of the inventions during the Renaissance.