d. the extent to which our senses influence intelligence.
Making others happy has been proven to boost self-esteem
In socialism, property is shared equally among different people. In capitalism, property belongs to one person who purchased it.
Well it just depends on how they deal with that stress if they have debts to pay or a family to feed and is falling behind in bills it might be hard to sleep knowing you can't support your family which leads to whom ever it may be in to a deep depression
A) a history textbook on the events of WW2
B) a book about the effects of WW1
Both are secondary sources.