There were several economic warning signs during the Hoover Administration. These included rampant government spending, many farm bankruptcies and too much credit spending. These factors were signs of economic problems to come that occurred during the Hoover administration.
The answer is B. If it were to cause anything, then it’d be the others, but it just prevents fuel from igniting at the wrong time.
Education or health services.
The photograph.
Because it is made by someone other than Rosevelt but it is still first-hand information.
The Answer is A, because it was meant for everyone not just scribes and teachers and clerks, the chinese also used them with also influenced the japanese culture.