Answer:
Option D Greek City States
Example: Athens
Robert Oppenheimer was the United states physicist who directed the project at Los Alamos that developed the first atomic bomb.
For independence because Britain was taxing the colonists too much, was passing too many acts oppressing the colonists, and even killed some colonists (Boston Massacre).
The Navajo were forcibly removed by the U.S. Army as they walk 300 miles to Fort Sumner in Bosque Redondo from their ancestral lands in Arizona and New Mexico. During the 18-day march, hundreds of people died. Thus, the long walk of the Navajo ended at Fort Sumner.
The United States federal government deported the Navajo people in 1864 and made an effort at ethnic cleansing during the Long Walk of the Navajo, also known as the Long Walk to Bosque Redondo. Navajos were made to travel from their homeland in eastern New Mexico to what is now Arizona. Between August 1864 and the end of 1866, there were about 53 distinct forced marches. According to some anthropologists the "collective trauma of the Long Walk is fundamental to current Navajos' sense of identity as a people".
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Lockouts were tactics that was not used by trade Unions.
