How do our identities and perspectives shape the way we understand history?

The study of history

Explanation:

because it  aims to develop understanding of and skills in ... our identity, our society and our world in order to inform how we might act to shape of the 20th century on our way of life ,values and culture. investigate how history  and reasoned account of the past that takes account of different perspectives.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.