Why an instrument / currency strengthened or weakened? This happens because there is:
1. OFFER (SUPPLY). the desire and ability of sellers in a relevance price.
2. DEMAND (DEMAND). ie demand is an expression of the desire and ability of a purchaser to acquire a certain amount of an item in a price range of possibilities that the buyer may be able to offer. Requests can be considered as a list of prices and quantities in the minds of buyers.
Fundament data will not mean much if the market participants (buyers and sellers), perform an action.
Characteristics of supply and demand is that there are so many buyers and sellers. None of them can affect individual market. Thus, a supplier will not be able to do anything on the market to influence the market even though it has a large capital.
Market movements are the rules of capitalism like the law of gravity. Buyers and sellers transactions provoke a battle to find a deal on every trip market on the planet. As the trip price is moving in the chart, traders are often looking for a number of reasons to explain the future price movements, analyze it, and often times looking for a number of reasons that can be attributed to the type of change.
But at the core of each of the single currency price movements are determined by the suppy and demand. If there is positive news it means the demand increases and supply decreases. While in case of negative news is usually slightly reduced demand and supply has increased.
Supply and Demand Spelling Out.
You can learn the techniques of trading with this concept