Answer: The silk road was mostly used for trade. But it also was used for culture so I'm going with C.
Explanation:
<h2><u><em>1 point: There is no hypothesis stated.
</em></u></h2><h2><u><em>1 point: In asking for volunteers, the teacher is taking a nonrandom sample that is probably not representative of the population of interest.
</em></u></h2><h2><u><em>1 point: Neither dreams nor nightmares are operationally defined, so they might be interpreted differently by later researchers.
</em></u></h2><h2><u><em>1 point: The research is not blind. The teacher could influence the results by the way he asked questions.
</em></u></h2><h2><u><em>(choose 2)</em></u></h2>
1) 10xyz affair-1797
2)lousiana purchase-1803
3)embargo Act-1807
4)war of 1812-1812
5)Monroe Doctrine-1823
The relationship in Germany, thousands of people began to leave Germany.
