The last option is the correct answer: Organizing the March on Washington.
Explanation:
Ella Baker in April 1960 created a civil right movement called: "The Student Nonviolent Coordinating Committee". This movement was really relevant in the 1963 March who was held in Washington. That date, there was a speech given by John Lewis who made angry some people but through the movement, the speech was changed for good.
The Indian Rebellion of 1857 had diverse political, economic, military, religious and social causes. ... The spark that led to a mutiny in several sepoy companies was the issue of new gunpowder cartridges for the Enfield rifle in February, 1857. A rumour was spread that the cartridges were made from cow and pig fat.
The sumerians invented the sailboat in Mesopotamia because they had to cross 2 rivers to trade with other cities. It made their lives easier when trading.
setting up natural monopolies.