The South African Native National Congress also known as (SANNC). They worked with Adrican National Congress (ANC) to eliminate that racial oppression.
Einstein's two postulates of special relativity are as follows, 1. The principle of relativity: The laws of physics are the same in all inertial systems. ... The constancy of the speed of light: Observers in all inertial systems mea- sure the same value for the speed of light in a vacuum.
At the time of war, Arthur Empey felt enraged by the sinking of the Lusitania and, the loss of American passengers, he expected to join the American army to combat the Germans. When America did not declare war immediately Empey decided to board a ship to England where he was enlisted in the British army. This was a violation of the neutrality law though no one seemed to care, and soon he was manning a trench on the front lines. He was made a member of a machine gun crew and sat in the British trench peering towards the German lines.
Racial segregation during the post-Civil War period was ruled constitutional by the Supreme Court in "Plessy vs. Ferguson", which ruled that "separate but equal" facilities in the South for blacks were constitutional.