El Salvador. Hope this helps!
The answer is A) Birth rate
The option that is an example of a barrier in a diffusion process that slow or stop the spread of an innovation is the lack of infrastructure to support a new technology.
The process of geographic diffusion can be understood as the dissemination of ideas, people, culture, things, technology, diseases, etc., from one place to another.
As an example, globalization, which is an example of spatial diffusion, that is, it starts at a point of origin and is spread very quickly to other places.
Therefore, a barrier in a diffusion process that slow the dissemination of an innovation is the letter a. lack of infrastructure to support a new technology.
Learn more about geographic diffusion here:
brainly.com/question/2035730
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The answer would be B, because there was more opportunity outside of what was the current U.S. Also Manifest Destiny drove the people to move the desire of what they wanted and what they dream was on the outside of what they currently knew as their own.
