The United Auto Workers union is prepared to strike Fiat Chrysler Wednesday. The strike would be the first in the industry since 2007, affecting about 40,000 workers. Take a look back at the 10 biggest strikes in U.S. history.
9. 1970 U.S. Postal Service strike -- This strike started in New York City but spread to 210,000 postal workers nationwide in March 1970 over increased dissatisfaction with wages, working conditions, benefits and management. Their demands were largely met after mail delivery came to a near standstill.