How were the mexico olympics and the black power related and what happened at the mexico olympics?

mexico Olympics, had tommy smith and john carlos, two black athletes gave the black fist/ black power salute during the medal ceremony.

they were both suspended from doing any further participation in the Olympics.

black power = black fist = riots broke out = athletes received threats from kkk and white supremacists and others = threatened to lynch 

At the mexico Olympics, tom and john carlos raised their infamous black fist in order to show the public the effect of the white racists on the black people as they didn't have money, jobs, education or even shelter.

no shoes = poverty

scarf = unemployment

the american rail road was the most influential and useful transportation system developed in the 1800's with steam locomotives and in the very late 1800's and early 1900's diesel electric locomotives being used to transport goods and people around the newly expanded united states!