At the beginning of human history, people could only eat food they found. But then people learned to find more ways to get food. About 10, 000 years ago people slarted to farm the land. After that, people developed farming skills.

People eat different food in different areas. In China rice is the main food for people in the south while the people in the north eat noodles. People who live in European countries near the sea eat lots of fish. But in Central Europe, people are away from the sea. So they don’t eat so much fish. They eat more special meat instead.

People eat food with different tools in different areas. In China, people always like using chopsticks while in North American, Australia and Europe, people always like using knives and forks, to our surprise, in India and the Middle East, people always pick up food with their own fingers.

Now people can eat different food from different areas. As we can see it is possible to convey food easily from one part of the world to another. We can almost cat whatever we like at any place of the world. For example people in Britain can eat bananas from Africa and rice from India. Food is becoming a very big business now.

Piggy banks have been around for a long time, but did you ever wonder why people thought to make their banks in the shape of a pig?

Pigs have nothing to do with money. They don't store food like a camel or a squirrel. So how did we end up using a pig as the style of a bank? Believe it or not, it happens by mistake.

During the 15th century, metal was very expensive. Dishes and pots are made of a type of inexpensive orange clay called pygg, which was pronounced just like pig. At this time there weren't banks like we have today, so people would store their money at home.

When people had extra coins to save, they would place them in clay jars or pots. Since the type of play was called pygg, people called the jars pygg banks. Over time, this evolved(发展) into piggy banks.

After a few hundred years, people forgot that the word pygg referred to the clay the banks were made from. The English language was also changing and the word pig was more commonly used. So in the 19th century when English potters（陶艺家）began to make piggy banks, they thought their customers were asking for banks in the shape of pigs, not banks made from pygg.

Today piggy banks are made from all kinds of materials. And they also come in a variety of shapes and animals. But the term piggy bank is still used.