Step-by-step explanation:
1. The problems/challenges encountered by Nanay Coring in her business includes;
- the Japanese who took over Philipines destroyed books they found in their bookstore which they did not like.
- the American war which drove the Japanese from the Philipines led to the store been destroyed
- a typhoon damaged the store unexpectedly, resulting in relocation.
2 & 3.
- according to Nanay Coring, they had to switch to selling candies, soap, slippers, papers, and cigarettes as this was demanded by the Japanese soldiers frequently.
- they also spent longer working hours.