Answer:
Advances in technology
Explanation:
Advances in technology is the single most important factor in the expansion of economic connections between countries since the mid-20th century.
Since the mid-20th century, the gap between nations is being gradually covered by technology. This has facilitated ease of doing business and have reduced the communication gap and as well as closed up the economic gap between nations.
All these have greatly contributed to the expansion of economic connections between countries since the mid-20th century and is a great boost to global trade.

Indian Standards Institute.

This is true. The specific u.s. department of health and human services (hhs) regulations that apply to research with children are known as subpart d: additional protections for children involved as subjects in research.
<h3>What is the protection of children as research subjects?</h3>
This has to do with all that has to be in place if children are to be used as participants in a research study. One of this would be to first get consent from the parents of the children. Due to the fact that the children cannot give consent on their own, their parents would have to sign a permission slip first.
Hence we can say that The specific u.s. department of health and human services (hhs) regulations that apply to research with children are known as subpart d: additional protections for children involved as subjects in research.
Read more on research here:
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<span>a. making the right decisions based on political correctness
-no, ,political correctness and ethics are two separate ideas
b. making the right choice based on popular opinion
-definitely now, sometimes the popular opition is not ethical!
c. following the right course of action
-this is good, but ethics is more the study of how to choose this course
d. the beliefs, values, and moral principles that help us to determine right and wrong
- this is the correct answer! this is exactly what ethics is
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