<u>Answer:</u>
<em>The rule of cross-cutting connections expresses that a volcanic interruption is constantly more youthful than the stone it cuts over.</em>
<u>Explanation:</u>
<em>Analyze the volcanic interruption and the encompassing rock.</em> Cross-cutting connections is a guideline of topography that expresses that the geologic element which cuts another is the more youthful of the two highlights.
It is a relative dating strategy in geography. The <em>standard of cross-cutting connections expresses that a volcanic interruption is constantly more youthful than the stone it cuts over.</em>
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
I know it might be too late, but I believe the answer is B) US research and design with mostly Asian production.
