The best and most direct ways to learn about a career is to
a.
interview friends about their jobs
b.
research online job sites
c.
gain work experience in the field
d.
perform an exploratory interview

The third alternative is correct (C).

All the ways listed in the question help in the process of learning about a career. However, the most direct and effective way to learn a trade is to practice it. In this context, gaining fieldwork experience is the correct answer. This means working directly in the trade, that is, learning in practice.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.

you would times this by how many days there are in a year 365*400=$146000