Civil rights movements are a worldwide series of political movements for equality before the law, that peaked in the 1960s. [citation needed] In many situations they have been characterized by nonviolent protests, or have taken the form of campaigns of civil resistance aimed at achieving change through nonviolent forms of resistance.
hl, Volume. Hectolitre. The litre (spelled litre in Commonwealth English and liter in American English) is a unit of volume. There are two official symbols, the Latin letter el in both cases: l and L. The litre is not an SI unit but is accepted for use with the SI. The SI unit of volume is the cubic metre (mÂ³). Read more.
American labs use a different version of the metric system than does most of the rest of the world, which uses the SystÃ¨me Internationale (SI). In some cases translation between the two systems is easy, but the difference between the two is most pronounced in measurement of chemical concentration.