What was the first man made material?

answer:

The first man-made plastic was created by Alexander Parkes who publicly demonstrated it at the 1862 Great International Exhibition in London. The material, called Parkesine, was an organic material derived from cellulose that, once heated, could be molded and retained its shape when cooled.

Explanation:

i think your answer there is c

answer; i believe the two groups were irish immigrants and chinese immigrants;