When were these black codes written? who do you think wrote these laws?

the graph is a circle graph because it demonstrates different components of the graph in the form of a circle . pls mark brainliest!

randy pausch was a famous mathematician, writer and lecturer who is particularly famous for his last speech, given in 2007, "the las lecture", because he illustrates why one's dreams need to be pursued in a logical order if success is to be obtained, option c. at this time, pausch had been diagnosed with terminal cancer so he told the audience to follow their childhood dreams, which were possible to achieve. it has been recognized as one of the best motivational speech around the world.