hand tool used for chopping, splitting, chipping, and piercing. Stone Age hand axes originated in simple stone implements that acquired wooden hafts, or handles, about 30,000 BC. Copper-bladed axes appeared in Egypt about 4000 BC and were followed by axes with blades of bronze and eventually iron; blades were fastened to hafts by a variety of means—e.g., lashed into a wooden sleeve, bound into a split of wood, inserted in a bone socket. The development of the iron-bladed felling ax in the Middle Ages made possible the vast forest clearance of northwestern Europe and the development of medieval agriculture. The ax played a similar role in land clearance in eastern Europe, Scandinavia, North and South America, and elsewhere. In modern times the ax, now with a blade or bit of steel, sometimes double-bitted or sharpened on both ends, has lost much of its historic role to powered saws and other machinery, although it remains a widely used tool with a wide variety of uses.