A subsequent theory, known as the “Kelp Highway,” came closer to the mark: As the massive ice sheets covering western North America retreated, the first humans arrived on the continent not only by foot but by boat, traveling down the Pacific shore and subsisting on abundant coastal resource
It was "all racial minorities" that were affected when Lyndon Johnson signed the Civil Rights Act of 1964, which forbade discrimination in the US based on race or creed.
