Subjects tell the listener and the reader whom or what the sentence is about. The subject is that part of a sentence which names a person, thing, or idea. e.g. Every complete subject contains a simple subject. The simple subject, which is a noun or pronoun, is the most important word in the complete subject.
The USPS considers a postcard to be any single rectangular piece of paper that is at least 3 1/2 inches high by 5 inches long by 0.007 inch thick' and no more than 4-1/4 inches high by 6 inches long by 0.016 inches thick.. The post office considers all papers outside of these dimensions to be letters.
Large postcards can measure up to 6 ââ high, 11 Â½â long and Â¼â thick, but they cost as much as a First-Class Letter ($0.47 and up) to send. To qualify for postcard pricing, your mailer must be at least 3 Â½â high, 5â long and 0.007â thick (approximately the thickness of an index card), but no more than 4 Â¼â high, 6â long, or 0.016â thick.