Is it okay to use country flags with currencies?

You should be fine using flags. If you look at the list of currencies, the names are usually made up of a country name and currency (Singapore dollar, Russian ruble, Swiss franc). Some places use currency that does not originate form a country. For example, most Caribbean countries use the East Caribbean dollar.

1. Why does each country have its own currency and flag?
2. Which country has red flag?
3. How many flags are there in the world?
4. Which country's flag has blue in it?

Why does each country have its own currency and flag?

Well the flag is usually a symbol of sovereignty. Not going to go too deep here, because I'm not a flag expert by any means. Meanwhile, currencies are instruments for a country. They can shield the country's economy from external shocks and their existence allows for a country to implement monetary policies.

Which country has red flag?

With the victory of the Bolsheviks in the Russian Revolution of 1917, the red flag, with a hammer to symbolize the workers and sickle to symbolize peasants, became the official flag of Russia, and, in 1923, of the Soviet Union.

How many flags are there in the world?

There are 254 different flags in the world, covering all countries and dependent territories (including the United Kingdom and Kosovo). If that's too many for you, the flags of the U.N.

Which country's flag has blue in it?

Light blue was chosen as the background for the national flag of Kazakhstan officially adopted in June 1992. The designer of the flag was Shaken Niyazbekov, who attributed the symbolism of the blue to peace, tranquillity, and well-being.