The meaning of this quote "A leader is best when people barely know he exists; when his work is done, his aim fulfilled, they will say; we did it ourselves" means if the leader is unknown to many people once he has finished or achieved a remarkable goal other people (such as Laozi) can steal the glory and be remembered for something they didn't do.
Answer:B
Explanation:
After the civil war there was many vets left without work
The Nullification Crisis was a United States sectional political crisis in 1832–33, during the presidency of Andrew Jackson, which involved a confrontation between South Carolina and the federal government. It ensued after South Carolina declared that the federal Tariffs of 1828 and 1832 were unconstitutional and therefore null and void within the sovereign boundaries of the state.
The Labor movement in the United States was was characterized by the same objectives, better pay, less hours of work, and equal wages for men and women, some of them also fought the child labor, the benefits for retired workers and the health insurance.
The collapse of the Knights of Labor occured after the Haymarket Square bombing on May 4th 1886, someone threw a bomb to the police during the last strike, and that resulted in 8 people dead and 8 convicted. This was a big seatback in the Labor organization in the US. The skilled labor members of the Knights of Labor, left the KL and formed the AFL or American Federation of Labor which wore out after the Taft–Hartley Act, or The Labor Management Relations Act of 1947 that restrict the power and activities of the labor unions.
On the other hand the ARU or American Railway Union collapsed after the Pullman Strike that lasted from May 11 to July 20 1894. The strike began when their wages were reduced. 30 workers were killed that day.
Summarizing the labor unions needed more organization to carry out a successful strike, and that resulted in their collapse.