Having more money to spend allows people to want more products and services.
Expansionary fiscal and monetary policies, consumer expectation of future price increases, and marketing or branding can increase demand.
Cost-push occurs when supply cost force prices higher.
You may find some sources that cite a third cause of inflation, expansion of the money supply. central bank, the Federal Reserve, has set a target of 2% as measured by the core inflation rate.
That's what happened to oil refineries after Hurricane Katrina.
The depletion of natural resources is a growing cause of cost-push inflation. That created shortages in manufactured parts, with some producers raising prices.
There are two main causes of inflation: Demand-pull and Cost-push.
Both are responsible for a general rise in prices in an economy. Demand-pull conditions occur when demand from consumers pulls prices up.
The Sherman Anti-Trust Act outlawed monopolies in 1890.
Natural disasters create temporary cost-push inflation by damaging production facilities.