How is China persecuting the Uighers?

China justifies such measures as a response to the terrorist threat posed by extremist separatist groups. These policies, in addition to some long-standing prejudices between the Han and Uyghurs, have sometimes resulted in tension between the two ethnic groups

Explanation:

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

they were byzantines