Im not sure specifically what case you're referring to but lack of emotion in cases doesn't mean someone is guilty or unaffected. a lot of times a person is in shock or is trying to keep from being overly emotional.
C the egyptions used the sistrum
Great Depression was mostly experienced by most of the countries in the period of 1930. It had demoralizing effects on the economy by dropping levels of the Gross Domestic Product. The personal income, tax revenue had hit the lowest level in the nation.
Giving Over extension of loans by the banks in order to cope the depression was the erroneous federal policy at the time of depression. It also resulted in various other impacts such as people were unable to pay off the loans. This financial disruption made the banks to close.
This led to stocking of money by the people that resulted in the stagnation of the money flow and the loss of confidence to lend and borrow money. This also reduced the value of money causing disequilibrium in the economy.
I think because no other country in the world has created something interesting or it was just a pass down by their ancestors and they wanted it to be a thing