They check there answers using history, like they use primary sources etc.
<span>A.) something that causes people to leave their country
Push factors 'push' the immigrants from their home country to their immigranted family. Push factors can include war, famine, or other disasters.
This is different from a pull factor, in which the pull factor pulls people to a better place, such as moving from a city to another for better working conditions or higher wages.
hope this helps</span>
Quite unlike the Minoans, whose society<span> benefited from </span>trade<span>, the </span>Mycenaeans <span>advanced through conquest
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I would say your best answer would be letter C.