Answer:
An example of human API here would be B. When someone is working on something and he or she uses social media to show progress and to take suggestions from viewers that are human API. This is a great way of interaction since the artists, in this case, can listen in and adjust his creation based on constructive criticism.
The cotton gin made it easy for slaves to separate seeds out of the cotton. However, it it increased slave usage all over. It actually increased the use of slavery. The cotton gin just made one part of a slaves job quicker and easier.
b. Polyphony was created for major churchholidays
