Answer:
15
Explanation:
Atomic mass refers to the sum of protons and neutrons in the nucleus of an atom. So protons are 7and neutrons 8. 7+8=15
C. the closing of the First Bank of the United States
assuming efficiency of each man to dig trench, in one day, for one hour is constant,
so one man, working for one hour in one day can dig 1.5 m
so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
The correct answer to this open question is the following.
Modern historians create modern narratives to help younger generations to understand history.
In modern and technological society, like we are living now, younger generations tend to forget the past, traditions or customs that were very important in the history of the country. There are many important names, characters, incidents, battles, documents, that formed this country but many young Americans are not aware or so interest in learning more about that. That is why it is so important that modern historians create modern narratives to help younger generations to understand history. To catch their attention. And not only through books, but through video, the internet or social media.
<span>Promote trade by reducing tariffs or trade quotas</span>
