It depends on the circumstances. For instance, if you buy something at the store, they are unlikely to take it back in exchange for the same amount of money unless there is something wrong with it. But if you traded games with a friend so you could both try a different game, and your friend is okay with it, trading back is perfectly okay.
the united states has had many things made in china and to pay them back we trade them things.
Yes, it is possible to trade items in Pokemon Pearl but, this is only allowed if you trade the item when it's attached to a Pokemon. If you are trading with a friend and don't want him to have your Pokemon just trade back.
It allowed countries that did not have necessary items to get them from other countries and those countries gave other things that they had a surplus of.
trade discount is for trade customer (who has an account with the supplier) discount allowed is for walk in customers (no account holders)
Giving something, getting something else back
A back to back trade is when you trade a Pokemon to another Pokemon then the other person trads it back.
Spartans did not trade with anyone due to the fact that outsiders were not allowed inside their city-states. Also, insiders were not allowed out.
No, you are not allowed to.
Being located between Europe and Asia allowed it to control trade between the continents.
They allowed to conduct foreign trade to keep the influence of outsiders to a minimum.
Jahangir
The main three things which have helped build a friendship between Canada and the US are their common borders, trade, and language. The geographical situation of both countries has allowed for a larger amount of trade, which is also improved by having the same language.