Bread quickly and at low costs to the manufacturer and the consumer. However, there has been some criticism of the effect on nutritional value. Bread is the staple food of the Middle East, Central Asia, North Africa, Europe, and in European-derived cultures such as those in the Americas, Australia, and Southern Africa, in contrast to parts of South and East Asia where rice or noodle is the staple. Bread is usually made from a wheat-flour dough that is cultured with yeast, allowed to rise, and finally baked in an oven. The addition of yeast to the bread explains the air pockets
Bread and circuses range of different themes including lust for power and desire for old age to illustrate his argument. Roman politicians passed laws in 140 B.C. to keep the votes of poorer citizens, by introducing a grain dole: giving out cheap food and entertainment, "bread and circuses", became the most effective way to rise to power. Juvenal here makes reference to the Roman practice of providing free wheat to Roman citizens as well as costly circus games and other forms of entertainment as a means of gaining political power. The "Annona" (grain dole) was begun under the instigation of the "popularis" politician