In choosing where to search for where to look at how weapons developed from The Scythe and/or the Sickle it is worth noting from a key reference at 
 http://scytheassociation.org/history/QUOTE"The scythe is a tool specially adapted for cutting  vegetation at ground level. There is no other reason  for its existence: it is useless at hand height and (unlike  the machete) very unwieldy as a weapon. Initially it  was probably designed for grass; but as pasture became  harder to find, and livestock were increasingly fed on  different kinds of straw, the importance of cutting oats,  barley and other grains close to the ground became more  important and the scythe began to replace the sickle as a  way of harvesting crops.  The scythe is therefore found in most areas of the  world where grass and grains such as wheat, barley, oats  or rye are the predominate agricultural crop. The scythe  belt emanates from Europe and the Middle East, but  extends from the Mid West of Canada and the US A,  through the whole of Europe, much of Russia, the Middle  East, Egypt and some other north African countries,  Turkey, Iraq, Iran, Kirghizstan and other colonies of the  former USSR, a few parts of China and of the Indian  subcontinent to Australia".UNQUOTE.