Trade balance measures the ratio of exports to imports for a given country’s economy. If exports are higher than imports (a trade surplus), the trade balance will be positive. If imports are higher than exports (a trade deficit), the trade balance will be negative.
The unemployment rate is basically the percentage of the people in the work force without jobs but is able and willing to work. It is measured by getting the ratio of unemployed people who are willing and able to work versus the total number of people in the work force.
The spot price of the underlying asset of a derivative.
A ICO presale, or pre-sale, also known as Pre-ICO is a token sale event that takes place before an ICO is made available to the general public to participate.