Answer:
Correct answer is A new era of unification and peace that led to nearly 200 years of increasing Japanese population, wealth, knowledge, and infrastructure .
Step-by-step explanation:
Second option is correct because this was one of the most prosperous period of Japanese history, also known as Tokugawa period. It was a period of isolation, when Japan developed.
All other options are not correct, because Japanese weren't allowing influence from the outside.