world's population and killed 50 million people. It was known as the
Spanish flu.
In 1919
,
it
suddenly disappeared.
Activity 4 Disease
List the nine diseases shown in Figure 3.9 on page 56. Next to the
name of each disease, write the number of people who die from it
annually.

2. Why is it possible for diseases to spread faster now than ever before?
3. Why can some diseases be prevented and cured more easily
nowadays?
4. Think about what Figure 3.13 shows. Write a note or a short poem
that says what you feel about the Black Death epidemic.
​