Answer: climate
Explanation:
Climate could be seen as the long term version of weather. Here Davis CA's weather conditions are averaged over 15 years. Weather is temporary and changes over a short period of time say days, weeks or months. Climate however lasts for consideraly long period of time say 15 years like the question above.
This is known as the Homestead Act .
During 1862, individuals were offered 160 acres of free land that they can use to start their own farm. This program created by the federal government gave away roughly 270 million acres of land. Most of this land was west of the Mississippi River. This act helped in changing the population of the Midwest United States.
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The issues of the french revolution and the american revolution