The answer is B. Ethnicity
This was one of the questions being raised by the United States Consensus Bureau. This had question the identity of many Hispanics or Latinos living in the US. They had made a separate questionnaire whether or not the two should be asked differently or does it have to be considered as one. Many have thought that the Hispanic or Latinos refers to race and ethnicity and should it be asked differently.
brainly.com/question/1446781
I think the answer is a. but I could be wrong.
There were several ways in which the US government increased Mexican immigration, but the best option is "congress passed laws saying that all Latinos fleeing dictators are welcome"
This is true. Many kings would plan and carry out invasions to gain goods, land and other loot and to expand their rule because many of them worried that another power would get too strong and take over their kingdom, and every king wanted to avoid that because they had become very fond of being king.