During the 16th and 17th centuries, coffee was introduced into one european country after another. coffee gained popularity as a beverage in the london coffee houses, which became centers of political, social, literary, and eventually business influence. the first coffeehouse in london was established about 1652. until the close of the 17th century, the world’s limited supply of coffee was obtained almost entirely from the province of yemen in southern arabia. but, with the increasing popularity of the beverage, the propagation of the plant spread rapidly to java and other islands of the indonesian archipelago in the 17th century and to the usa in the 18th century. coffee cultivation was started in the hawaiian islands in 1825. but the 20th century the greatest concentration of production was centered in the western hemisphere - particularly brazil. in the late 19th and early 20th centuries, industrial roasting and grinding machines came into use, vacuum-sealed containers were invented for ground roasts, and decaffeination methods for green coffee beans were developed. after 1950 the production of instant coffee was perfected. the popularity of instant coffee led to increased production of the cheaper robusta beans in africa. what is stated in paragraph 2?