His expedition lasted 2 years.
Scientific racism<span> (sometimes </span>race biology<span> or </span>racial biology<span> or </span>pseudoscientific racism<span>) is the </span>pseudoscientific<span> study of techniques and hypotheses attempts to reveal the biological differences between races which can be used to support or justify belief in </span>racism<span>, racial inferiority, or </span>racial superiority;<span> alternatively, it is the practice of classifying</span><span> individuals of different </span>phenotypes<span> or </span>genotype<span> into discrete </span>races. Historically it received credence in the scientific community, but is no longer considered scientific.
During the twentieth century, the federal government of the US country becomes stronger, more powerful, and richer in comparison to the previous years.
<h3>What is the federal government?</h3>
The government in the country of the US is called the federal government. It includes the various states and provinces of the US country which have the power to make relevant laws and take reliable decisions.
The US country became the leading country in the year 1917 in the political world. After world war II, the US country becomes more powerful in the whole world. They become a member of the trading organizations and military organizations of the world. They also had a lead role in political scenarios of the world.
Therefore, the federal government of the US country has developed a lot in the 20th Century.
Learn more about the US in the 20th Century in the given link;
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Answer:
Explanation:Archaeologists study the remains of ancient humans as well as artifacts
