How was the whole decade of the 1900's alike? In many ways of course. The whole century was an age of reform and technology. Most of the mordern inventions that we used everyday was made in this century. Such as your bathtub, refrigerator, television, vaccum cleaner, and your radio. the century changed so much from the beginning of the century to the end. Mainly because of the World Wars and the Great Depression. The decade started off slow but began to pick up during the 20's after World War I. That was when Babe Ruth played baseball and most of the inventions were created. Also music and dancing advanced with the Charleston.