What do I answer I know all about this.
One of the important elements of his presidency was the Square Deal policy. ... Roosevelt's progressive ideas and his Square Deal Policy in relation to Control of the Corporations were demonstrated during the Anthracite Coal Strike of 1902 saw President Roosevelt act as a mediator during the bitter dispute.
They were all used in china before being used in Europe.
To cause a source to be biased means that it is influenced by your opinion or another factor that is not factual. Bias can take away from the credibility because it is not completely true, as a source should be.