In 139 B.C.E., the Chinese emperor dispatched Zhang Qian to central Asia to seek allies against the Xiongnu. The Xiongnu were a large confederation of Eurasian nomads who dominated the Asian Steppe.
The reason why the spanish leaders wanted to push spanish control into North America during this time period was mostly because they wanted to gain more cotrol - which could be obviously achieved through more physical gain of the land of North America.
A citizen becomes involved in policy making by participating in elections. This is because policies will mostly be determined by the elected officials hence the need to ensure that one votes for representatives sharing similar views. This can also be achieved through participation in council meetings
The answer is B. Development of railroad systems.
