Which of these changes took place in the first two decades of the 20th century? (3 points) оа
A. More U. S. citizens lived on farms than in the city
Ob
B. The majority of the U. S. population lived in urban areas instead of rural areas.

the correct answer is d

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.

southern north america: yucatán peninsula in southern mexico extending into northern guatemala, and northern belize. these moist forests on the yucatán peninsula of south-eastern mexico are characterized by a tropical humid climate with little topographic relief.

explanation: