B. He improved the steam engine, allowing it to be used in many
industries
Explanation:
- The first steam engine was built in 1698, and by the time Watt was born, the machines, perfected by Thomas Newcomen, were already pumping water from mines throughout the country.
- Sometime around 1764, Watt was given a model of the Newcomen machine to repair it.
- Realizing that it was impossible to repair her, he began to work to improve it.
- He added a separate condensation chamber that prevented excessive steam loss. He patented a new, improved model of a steam engine in 1769.
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<span>It opened the door to almost unlimited immigration.</span>
Answer:
Cabeza de Vaca method of treatment to heal the sick and injured indians who were brought to him was laying-on of hands and fervent praying.
By doing this, Cabeza de Vaca received food in return for treating the ill and injured Indians throughout his mercantile career. His method of treatment included blowing his breath on affected areas of bodies and laying on of his hands, to which the Indians responded positively.
Cabeza de Vaca also practiced surgery according to one historic operation in 1535, where he removed an arrowhead from deep in an Indian's chest (sagittectomy).
