Theodore Roosevelt was known as a "trustbuster" because he wanted to test the power of the government to break up bad trusts. He even asked the Attorney General to bring a lawsuit against a trust to make his point. Theodore Roosevelt was one of the first Presidents to make conservation a national issue.
Arizona,Colorado.Wyoming,Arkansas,California,Idaho,
The thermometer was known to be significant because it was the first time that humans actually got hold of reading specific temperatures. The thermometer is also commonly used in various different situations. It's used to measure the heat/cold outside, the temperature of food, a human's temperature, and used to measure in science experiments. Those are simply a few examples. Hope this helped :))
