The document discusses the history and development of various agricultural tools used for cutting, digging, plowing, and harvesting. It describes how early axes from 1.5 million years ago evolved to have handles and were made from different materials like copper, bronze, iron and steel. Basic digging sticks and hoes were some of the earliest tools used in agriculture, while plows developed from modified tree branches pulled by oxen. The document also provides details on components of plows like the coulter, plowshare and mouldboard, as well as tools like sickles and scythes used for harvesting grains and cutting grass throughout history.