When a hole in the ground is formed by chemical waste.
The main problems faced by the unions during the 1800s all had to do with employers, in that employers had a great deal of power of employees. But they were able to overcome this issue by banding together.
Answer:
It emphasizes that King's critics who promote patience have not produced change
Explanation:
The sentence "For years now I have heard the word ‘Wait!'" contributes to the text as a whole by showing that Martin Luther King' s critics who have been preaching patience have not produced change.
This shows that MLK has been told continuously to wait and after many years, nothing has been done to produce change which prompts him to continue the struggle for freedom