Quatr.us > Math >Geometry > Quadrilaterals > Rhombuses. Rhombus. A rhombus is a kind of quadrilateral that has two sides that are parallel to each other, and another two sides that are parallel to each other. A rhombus is a special kind of parallelogram, and squares and rectangles are special kinds of rhombus. To figure out the perimeter of the rhombus, you can add the lengths of all the sides together. To figure out the area of a rhombus, you have to cut it into shapes that are easier to figure out. You want to cut it into a rectangle and two right triangles.
James Marshall's discovery of gold at Sutter's Mill in California in 1848, started the California Gold Rush.
The California gold rush of 1849 brought large numbers of American citizens and new immigrants from Europe to California. The presence of gold -- the worldwide standard curren â¦ cy in that time -- made California tremendously valuable to the United States.he first finding of gold was at the tailrace of a sawmill being  built by James Wilson Marshall in Coloma, California. The mill  property was owned by Johan (John) Sutter. â¦ The area that was  impacted by the gold rush was northern California from Sacramento  north to San Francisco.