Sterling
The world's oldest currency still in use is Pound Sterling (The currency of the United Kingdom).
If I was going to be a stickler -and I am-, I would answer that it is the no-longer-used Scandinavian currency called "Daler", which is the currency that led to the name "Dollar". However, Europe still has many different currencies, but I presume the answer you are looking for is the currency called "Euro".
They use euro' but used to use Franc's
Dogs and Cats. They were very rare at the time and a great form of currency.
They use the North Korean Won.
The world's oldest currency still in use is Pound Sterling (The currency of the United Kingdom).
It is the oldest NATIONAL flag still in use - it is not the oldest flag.
sanskrit is the oldest language and it is still in use in HINDI rituals
Copper
Sanskrit
No. Poland still uses it's own currency.
yes
The Bosnian Convertible Marka was the currency of Bosnia in 1914 and is still the currency used. The Marka is also the currency of Herzegovina.
tye
Lambeau Field
you can get a membership or you can buy crowns and use them to buy the worlds. i recommend crowns, because even if you run out of membership you still have the worlds.
The Dutch tricolour flag is the oldest tricolour flag still in use.