The supper ,how long did this painting take to finish and why did it take so long

4 years

It took 4 years (1503-1507) to paint it, although it was unfinished, it took another 3 years to complete, up to the year the painter died in 1519.

Explanation:

For one thing, it's believed that da Vinci took about three years to paint The Last Supper, mostly due to the painter's notorious tendency to procrastinate. For another, stories of spiritual decay manifesting itself physically have long existed.Usually, it takes 2-3 sittings before I experience that definitive moment of “it's done.” Each sitting is approximately 3 hours. If the painting is small, I may be able to finish within 2 hours. Larger paintings take me longer.

Hope this helps!!

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.

lots of people lost money in both