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.
the first ever colony is the colony of Virginia, if you are talking about the first permanent colony, its Jamestown
Natural elements of the ecosystem are often borderlands, for example rivers or mountains, the Great Lakes.
