The europeans brought infectuous diseses such as the bubonic plague, chicken pox, pneumonic plague, cholera, diphtheria, influenza, measles, scarlet fever, smallpox, typhus, tuberculosis, and whooping cough. The diseases introduced in the Americas by the Europeans were crowd diseases: that is, individuals who have once contracted the disease and survived become immune to the disease.
Answer- B. because it violates the amendment that talks about individual rights
<span>In this excerpt, the writer is reminiscing about his childhood. The writer uses the words, "kindness" and "indulgence" to describe his parents. I gather that he was well taken care of and that his parents were not controlling tyrants. The writer also states that he felt "fortunate" for his life after mingling with other families.</span>
In most cases, the engineered works will have a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as slack water levels, often just called levels.
Answer:
Lacks random assignment
Explanation:
the researcher may not Be able to establish valid causal relationships as the study lacks random assignment in that participants do not get equal opportunity of being assigned to groups. Random assignment means the researcher applies chance in assigning participants to groups such that the study is not biased and causal relationships are not affected. For example if a participant does not get to choose his group, the researcher randomly flips a coin to assign him to a group and so there is an uncorrupted result in findings
