Answer:
B. They help historians make connections between different historical events.
Explanation:
Primary sources and secondary sources help historians to research and conclude about the past. Primary sources are the basic and immediate account of the past. Sources include books, letters, video data, databases, etc. Secondary sources are the interpretation that gets followed after the primary ones. Historians form analysis and researches out of the primary texts and data. The events that occurred in the past are written and presented by the writers who do not witness those events personally. These sources help the historians to present interpretations of the events and form connections between them.
Because The Emancipation Proclamation Southern People Didnt Like Sorry If This Was Wrong Im Doing The Same Thing
<span>Wherever the Union armies went in the South (after the Emancipation Proclamation), they were under orders to liberate any slaves they found. </span>
Some Americans thought that making California a part of the US would strengthen the security of the nation because there was going to be fewer war threats by adding more territory.
Explanation
They believed that it would protect them more from war threats because California provided a coastline to protect the country, which added more territory. Having the control of it, they could build a defense against other countries who would want to invade from the west side.
In addition, California's natural resources such as silver, gold, and fertile soil were very important for the nation, which was in a growing process.
Decibels measure intensity. If you whisper in an empty room it will measure between 0 and 1 db. This indicates the intensity of sound is minimal. This is considered the threshold of hearing.
A sound that measures 30 decibels is a 1000 times louder than the the threshold of hearing. An example of this is the noise of a regular computer produces between 20-40 dB.
