Which material did viking artists use to make many pieces of horse gear? a. metal b. ceramic c. granite d. mahogany

a. metal

Explanation:

a. metal  The Vikings used very the swords, the richest of the Vikings possessed the best swords, they had golden details, so the metal was the most used material. knives and spears were the most used instruments but only at the beginning of the viking era, when started the battles, after they were substituted, not possessing luxurious details like the metal of the swords

i think it saint james in santiago de compostela