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.
Old British Postcard Sizes. In the UK postcards were introduced in 1870, plain and printed by the post office. From 1894 picture postcards were introduced (known as court cards) at 4.75 x 3.5 inches. This size is common up until 1899. In 1899 a standard postcard size of 5.5 x 3.5 inches was introduced as the maximum size. The minimum size was 3.25 x 2.25 inches. The minimum size was raised to 4 x 2.75 inches in 1906 and in 1925 the maximum size was raised to 5.875 x 4.125 inches. This standard was kept until at least 1968 when special postcard postage rates were abolished in the UK.