How was the "unwritten law" of lynching supported by written law?

 boldly avowed their purpose to intimidate, suppress, and nullify the Negro's right to vote. ... Thus lynchings began in the South, rapidly spreading into the various states until the national law was nullified and the reign of the “unwritten law” was supreme.

Explanation:

in november 1781, john hanson became the first president of the united states in congress assembled, under the articles of confederation. many people have argued that john hanson, and not george washington, was the first president of the united states, but this is not quite true.

explanation: