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.
Others, such as Argentina and Mexico, have shifted between federal, confederal, and unitary systems, before settling into federalism. Brazil became a federation only after the fall of the monarchy (see States of Brazil), and Venezuela became a federation after the Federal War. Australia and Canada are also federations.