Masks have been used for various purposes throughout history including protection, disguise, performance, and entertainment. They have been made from materials like wood, paper, clay, and metal. Ancient cultures like the Egyptians used masks in burial ceremonies to protect bodies, while the Greeks and Asians used masks in theater. African and Native American masks were worn in religious ceremonies and were believed to allow the wearer to embody the spirit represented by the mask. Today, masks are still used in celebrations and parades like Mardi Gras, where colorful costumes and masks are worn to commemorate the Christian tradition before Lent.