Yes the goal of the historian is to create accounts of events and also to interpret them.
An economic indicator is a type of statistic data about the economic activity of a country, it enables analysis about the current situation and performance of the economy. Moreover, it also allows predictions of future performance. One economic indicator used to tell how an economy is doing is the CPI, Consumer Price Index, it takes a sample of many goods and services over two hundred unit category. The information is gathered through phone calls and personal visits.
D The first time a baby makes eye contact with another person
The placebo effect is a procedure in which a patient is made to believe that a drug has a direct on the person. Therefore improving his/her symptoms from the said disease that he/she is experiencing. It is directly injecting or making a procedure using alternatives. The idea is that the patient would believe such measures were done and that they will be cured from their diseases. There are no video clips available on you questions but I hope this helps.
