When using the logical operator, both subexpressions must be true for the compound expression to be true.

The answer is "And".

Explanation:

The logical operation is a special symbol or phrase, in which information terms are more than two connected. It is typically used to test the relationship. It only tests true state in programming, so that it uses the logical operator And.

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.

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