1. Bitcoin has being widely used as payment method for business operations and other services and supports international transactions as there is a common currency conversion involved.
Bitcoin for cross border payment cannot be reiterated that much because of the so many benefits we have all had from it even in this forum space while making payment for a service or being paid for a service rendered. Its ability to have so many conversion currencies makes it a suitable option to use for cross border transactions in and out always.
3. Bitcoin has the function of money with the ability to both depreciate and appreciate in value with relevance to certain external factors.
I will treat Bitcoin as an asset here that its value is been measured by money and not the Bitcoin been seen as an alternative to money. The ups and down in value of Bitcoin is being caused by the money value we attach to it in the first place. So it is an asset and all asset will definitely be affected by external factors especially those that have the most used currency in the world market being attached to it.