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The labor movement in the United States grew out of the need to protect the common interest of workers. For those in the industrial sector, organized labor unions fought for better wages, reasonable hours and safer working conditions. ... In the 19th century, trade unionism was mainly a movement of skilled workers.
A voilent protest, threats towards a school or a threat to a federal ran business such as a post office some banks police station etc.
The technique which two protesters of the Sardar Sarovar Dam project use to gain attention tot heir protests is: <span>a hunger strike/fasting
They began their fast to protest the central government that stands with the Sarovar dam project that endangers civilian's farm lands by increasing the height of the dam.</span>
Feudalism was successful because it allowed the control of land in exchange for service or labor.