If you have a dual-alternative decision (you want to perform one action when a Boolean expression evaluates as true and an alternate action when it evaluates as false), you can use a(n) statement.

if-else  

Explanation:

A dual-alternative decision structure is a structure that includes a single or a group statement.  

There are two statements:

True and false

The true statement is that statement that includes one statement or block of the statement.  

A false statement is that statement that includes two statements or block of statement

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.