Marco Polo traveled during the middle ages (AP period 3), for this the communication technology was not very advanced and Western Europe didn't really know the situation of East Asia and vice versa. When Marco Polo explained his travels to the Europeans of the greatness of China many Europeans decided to go and see for themselves if this greatness was indeed true. When the Europeans arrived in China they were very impressed and a new promotion of travel to China emerged, INCREASING China's economy.
Because the senate was one vote short
<span>I am the LORD thy God.
No other gods before me.
No graven images or likenesses.
Not take the LORD's name in vain.
Remember the sabbath day.
Honour thy father and thy mother.
Thou shalt not kill.
<span>Thou shalt not commit adultery.</span></span>
A theory is a hypothesis that is proved to be true through rigorous scientific methods of verfiication, mathematical and scientific arguments. Theories escalate into laws more when found out to be a natural fact. In this case, the answer would have to be A.
The slave systems is the correct answer