A small group of people traveled from England to live in what is now the USA.
A terrible panic broke out as people tried to escape from cities across the USA.
At that time, the average price of a new house in the USA was $150,000.
But some studies in the USA show that people in cities live longer and healthier lives.
In the USA, 56 percent of families owned a car as early as 1927.
Most organic food in the USA actually comes from a few giant farms.
