To make officially valid or consent to.
A Trade barrier are laws that limits free trades between countries or nations, An Embargo are type of laws that specifically cuts off trades, it may be import or export into specific countries. Either of these answers fit your question.
Social interactions – A pre-defined process on which we act and how to react to those around us, Symbolic interaction - a theory that develops from practical considerations and alludes to an environment that may really exist, Small-scale patterns – interactions between individuals. These are the association of microanalysis in sociology. It is associated with them except the Conflict Theory.
Answer:sibling rivalry
Explanation:
What is sibling rivalry?
This is an animosity and fighting between sibling that occurs due to the arrival or birth of a new child in a family .
The first child or older child may feel a bit of jelousy for this new born child and this start as soon as the child is born.
The older child may feel like their parents like this child more than they love him or her because of this they may act spiteful towards their sibling .
To them this may feel like the only way to take out these frustrations by being mean to their siblings.
Most of the times they do this because of their level of maturity hasn't real reached that stage where they can understand that the love of their parents can be split equally hence they don't do this because they sincerely hate their siblings; which may be the reason why Ethan regretted at the end.