It is very common to express the concentration of solutions in terms of percentages. Percent means per 100 parts, where for solutions, part refers to a measure of mass (Î¼g, mg, g, kg, etc.) or volume (Î¼L, mL, L, etc.).
The founding ceremony of the Federation in 2161. The four founding species of the Federation (clockwise from top left): Humans, Vulcans, Andorians, and Tellarites. The Federation was founded in San Francisco, Earth in 2161.
History of the United Nations. The predecessor entity to the UN was the League of Nations. The League of Nations was established during WWI in 1919 by the Treaty of Versailles (one of the peace treaties adopted at the end of WWI). The League of Nations's goal was to encourage cooperation between countries and keep international peace and security.