Historia del tractor, Nelson Cardenas. By Nelson Cardenas 1815 may 5, 1815, Tracción animal https://www.timetoast.com/timelines/evolucion-tractor-agricola 1821 May 5, 1821, Arado de vapor estatico https://www.timetoast.com/timelines/evolucion-tractor-agricola 1838 may 5, 1838 segadora https://www.timetoast.com/timelines/evolucion-tractor-agricola 1842 may 5, 1842, motor a vapor https://www.timetoast.com/timelines/evolucion-tractor-agricola 1846 may 5, 1846, maquina agricola https://www.timetoast.com/timelines/evolucion-tractor-agricola 1890 may 5, 1890, Cosechadora https://www.timetoast.com/timelines/evolucion-tractor-agricola 1924 may 5, 1924,Tractores agrícolas (Rueda metal) https://www.timetoast.com/timelines/evolucion-tractor-agricola 1928 may 5, 1928, Tractor elevado metalico. https://www.timetoast.com/timelines/evolucion-tractor-agricola 1930 may 5, 1930, Tractor. https://www.timetoast.com/timelines/evolucion-tractor-agricola 2018 may 5, 2018, Veltra T254 https://www.timetoast.com/timelines/evolucion-tractor-agricola