<span>He or she is exhibiting obsessive-compulsive disorder.It is one of the mental disorder where people often checks their daily routine things that they have done it correctly or not.For example we keep on checking whether the door is locked or not,then switch off the gas stove or not.It is not known unless we are affected by the daily routine.These type of mental disorder people will not concentrate on one thing their mind keep on checking.In research stated that most of the women have these disorder than men.</span>
This is of course a very complex question that does not have a definitive answer, but 1850s would be a good decade to start counting as "Modern". This was a decade of the telegraph and Darwin's The Origin of Species.
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They lost much of their land east of the appalatians!
You posted the same question twice just letting ya know so you don’t loose points
