B : very long-established practice considered as unwritten law c : recurring practice Custom makes all things effortless. tariff, responsibility - a federal government tax on imports or exports; "they signed a treaty to lessen duties on trade amongst their nations around the world" Add to phrase record Incorporate to https://lukassyajk.creacionblog.com/37974365/helping-the-others-realize-the-advantages-of-personalized-pennant-flags