made improved plow for plains farmers

Following the 1867 “Report on the Condition of the Indian Tribes,” Congress decided that the best way to end the Indian wars was to:

Tenement houses in New York City:

In major cities, politics was often a form of public entertainment.

In the PBS/Frontline article, “How to Talk to Your Doctor”, it is suggested that in order to be prepared and get the end-of-life plan we desire we should discuss our wishes now, before an emergency, and:

Research on bereavement and grief has found:

Research on the health impact of grief following loss of a spouse suggests:

Research thus far has found that marriage is most likely to benefit the health of:

Psychological stressors:

Locke (2014) says that scientists use the term “theory” differently than regular people.  What do scientists mean by “theory?”