1. 1918: The Superbug The Spanish flu killed 40–50 million people.

2. 1957: Asian Flu

Asian flu caused 70,000 deaths in the United States.

3. 1968: Another Pandemic

The Hong Kong flu killed 34,000 Americans.

4. 1986: Don’t Eat the Meat

BSE was first diagnosed in Britain.

5. 1996: A Bad Burger

The first human death from BSE was recorded.

What conclusion can be drawn about infectious diseases, based on this timeline?

as the years increase, infectious diseases kills less humans.

Explanation

The number of deaths are decreasing as years increase.

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.