What is a foreign soldier who serves in an army only for pay

They were treated unfairly

That's mean they can't vote, and did not have any rights

I hope that's help !

Answer:

The correct answer is C. The California Gold Rush did not create a serious labor shortage in California but on the contrary, as it generated a massive expansion of labor in that state.

Explanation:

The California Gold Rush was a social phenomenon occurred in the United States between 1847 and 1855, characterized by the large number of immigrants who came to the vicinity of San Francisco in search of the metal. This phenomenon began near the town of Coloma, when gold was discovered in Sutter's Mill. When the news of the discovery spread, around three hundred thousand people emigrated to California from the rest of the United States and other countries.  

The first gold seekers, called forty-niners, traveled to California by ship on the Cape Horn route or in caravans crossing the continent. At first, gold seekers collected gold in streams and riverbeds using simple techniques such as screening, but later developed more sophisticated methods for extracting gold that were adopted throughout the world. Some of these seekers of fortune became millionaires, but most were left with little more of the goods they had when the Gold Rush began.

The effects of this sudden migration were spectacular. Before the gold rush, San Francisco was a tiny village, and with the fever the village it became a city. Schools, roads and churches were built, and other towns were founded. A legal and governmental system was created, which led to the admission of California as a state of the Union in 1850. New means of transportation, such as the steamboat, entered service in the state, and railway lines were laid. The business of agriculture was also started, the second fastest growing item in California.