By the nineteenth century, Inuit technology had changed and diversified from that of the Thule period. In the Copper Inuit area of the central Arctic, perhaps as a result of the indirect influence of European technology, people began using the native copper deposits of the region in much of their technology. Clockwise from the upper left: a copper fish-hook with a bone shank; an antler arrowhead with a copper blade; an ulu with a copper blade; a large copper knife; a burin with a trade-iron blade; an antler toggle; an antler marlinespike and sinew twister for use with a compound bow; and an antler harpoon head with a copper blade.