Inflation is the increase in the prices of goods and services across an economy. When prices inflate, you need more money to buy the same things. The opposite of inflation is deflation, when prices are lower across a range of goods and services.
James Howell, a 17th century historian cum writer was the first writer to earn his living from writing alone in the English language; other writers of those times pursued writing as a hobby, not a profession as writing alone never paid enough.
It seems the first people who wrote were the Sumerians and the Egyptians around 3500-3200 BC. It is not clear which of those two peoples invented writing first, although it seems the Egyptian writing had some Sumerian influence and not vice versa.