by whom was the second one commissioned?
Ludovico Sforza - Duke of Milan
Introduction
The Last Supper ( or "L'Ultima Cena" ) is a late 15th-century mural painting by Italian artist Leonardo da Vinci housed by the refectory of the Convent of Santa Maria delle Grazie in Milan, Italy. It is one of the Western world's most recognizable paintings.

The work is assumed to have been started around 1495–96 and was commissioned as part of a plan of renovations to the church and its convent buildings by Leonardo's patron Ludovico Sforza, Duke of Milan. 
when was the first man made diamond made 1954 what are the materials required to make this? Pure carbon, the belt press, the cubic press and the split-sphere (BARS) press. what temperature-pressure conditions are required fopr this? High pressure, high temperature. can you mention any of its uses? Machine tools and cutting tools; as a Thermal conductor; as an Optical material; semiconductors ; gemstones what is the first one? A machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformation can you provide me the historical background for such tools? Forerunners of machine tools included bow drills and potter's wheels, which had existed in ancient Egypt prior to 2500 BC, and lathes, known to have existed in multiple regions of Europe since at least 1000 to 500 BC. can you name any prominent figure involved in this background? Leonardo da Vinci where was he born? Tuscan hill town of Vinci, Republic of Florence. what was his profession? Painter, engineer can you name any such painted work by him? Mona Lisa, The Last Supper
Ludovico Sforza, Duke of Milan Ludovico Sforza Ludovico Sforza, Duke of Milan
The Last Supper (Leonardo) The Last Supper (Leonardo) The Last Supper (Leonardo)
Introduction Commission and creation Introduction
The work is assumed to have been started around 1495–96 and was commissioned as part of a plan of renovations to the church and its convent buildings by Leonardo's patron Ludovico Sforza, Duke of Milan Leonardo's patron, Ludovico Sforza, planned that the church should be remodeled as a family mausoleum, and to this end, changes were made, perhaps to plans by Bramante. The entire plan was not carried out. and a smaller mortuary chapel was constructed, adjacent to the cloister. The work is assumed to have been started around 1495–96 and was commissioned as part of a plan of renovations to the church and its convent buildings by Leonardo's patron Ludovico Sforza, Duke of Milan
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The Last Supper (Leonardo) [SEP] Introduction
The Last Supper ( or "L'Ultima Cena" ) is a late 15th-century mural painting by Italian artist Leonardo da Vinci housed by the refectory of the Convent of Santa Maria delle Grazie in Milan, Italy. It is one of the Western world's most recognizable paintings. The work is assumed to have been started around 1495–96 and was commissioned as part of a plan of renovations to the church and its convent buildings by Leonardo's patron Ludovico Sforza, Duke of Milan. The painting represents the scene of the Last Supper of Jesus with his apostles, as it is told in the Gospel of John, 13:21.