The social sciences began to divide into distinctive areas of research.

Between 1880 and 1910

Explanation:

Between 1880 and 1910, the social sciences began to divide into distinctive areas of research. Before this time period, the social sciences were often considered to be "humanities" and were all categorized under a single heading. However, as each subject became more complex, different categories were necessary in order to better study each topic in depth.

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.