The statement "the Cold War caused the United States to invest money in exploring the moon." purely states a fact and does not contain information that would lead the reader to think it is biased, as there are no opinions expressed in the sentence.
The US government, in fact, invested millions of dollars in the "space race" against the Soviet Union, which resulted in the landing of the first man operated shuttle in the moon.
In the nineteenth century, Mexican American, Chinese, and white populations of the United States collided as white people moved farther west in search of land and riches.