Rome i believe Rome but you didn't give the list Hope this helps<span />
“Chinese received 30-50 percent lower wages than whites for the same job and they had to pay for their own food stuffs,” Chang says. “They also had the most difficult and dangerous work, including tunneling and the use of explosives. There is also evidence they faced physical abuse at times from some supervisors.
Answer:
Because many ethnic groups do not agree with one another and it can lead to conflict.
Explanation:
