Montgomery bus boycott, mass protest against the bus system of Montgomery, Alabama, by civil rights activists and their supporters that led to a 1956 U.S. Supreme Court decision declaring that Montgomery's segregation laws on buses were unconstitutional. The 381-day bus boycott also brought the Rev.(Britannica.com)
Because of lord krishna, shankaraachaary
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With the Discovery of trench warfare, There was a need for weapons that were capable of long-range destruction and also inflict maximum damage at the same time. this resulted in the invention of many new weapons.
B. France retained control of India