Physical distance is the correct answer.
Studies have shown that having a close relationship between grandparents and grandchildren is important and can reduce symptoms of depression for both. However, more and more kids have grown up without having much physical or emotional contact with their grandparents. The most common explanation for grandparents and grandchildren to have a remote relationship is the physical distance between them.
The
would enable a woman to assess a man's level of commitment, detect the existence of prior commitments to other women or children, and simultaneously signal to the man her sexual fidelity.

I believe the answer is:
《Biblical allusions》
hope this help.
Answer:
July 10, 1954
On July 10, 1954, President Dwight Eisenhower signed the Agricultural Trade Development and Assistance Act of 1954, Public Law 480, creating the program which became known as Food for Peace.
Explanation: