The rapid growth of the population of San Francisco started in 1848. The main reason was the California gold rush. The gold was found in the Sierra Navada and it brought many people to California from the rest of the US and abroad. The population boom included many workers from China. The population of San Francisco increased from about 20,000 in 1850 to about 150,000 in 1870. Answer: C. Discovery of gold in the Sierra Nevada.
This is NOT my answer! This belongs to W0lf93
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It would be "<span>"c) the no-third-term rule" that is not an example of governance that developed by custom, since this was only implemented after FDR won an unprecedented number of terms as president of the United States. </span>
After the Civil War, the US Constitution became a means to ensure that African-Americans had rights in American society. This was due to the passage of the following three amendments:
1) 13th amendment- This outlawed slavery or forced labor all over the US.
2) 14th amendment- This amendment states that any person born on US soil or naturalized has all of the rights/freedoms guaranteed in the US Constitution.
3) 15th amendment- This amendment states that a person cannot be stopped from voting based on race, color, or past servitude. Essentially, this makes it so that a government can't stop a person from voting based on the fact that they were a slave before this time period.
They forced China to open its ports and to trade with Britain
