An expense that changes
The price varies
<span>Increase tariffs
i really hope this helps!</span>
The commercial revolution which was the predecessor for the industrial revolution (which is widely known), had a major impact on daily life in general, but especially trading. The commercial revolution involved the creation of established and stable trading routes all around the world which traded in various materials (spice, silk, metals, etc.) all of this drastically affected daily life as well.
Positive requires others to help you with a good or a service
A Negative only means others need to withdraw from interfering with your actions