Although swords, bows, and arrows remained the mainstays of warfare, suddenly matchlocks, muskets, and cannons made their appearance.
Matchlocks, muskets, and cannons were replaced by swords, bows, and arrows.
mnli hypothesis: Matchlocks, muskets, and cannons were replaced by swords, bows, and arrows. premise: Although swords, bows, and arrows remained the mainstays of warfare, suddenly matchlocks, muskets, and cannons made their appearance.