Which phrase best completes the diagram? -Spread of Papal Authority
1Emergence of powerful European Rulers
-The Travels of Marco Polo
-Reasons for European Exploration

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.

the answer is b: an economic crisis throughout the country.

not sure but thinking i'ts cause the government was broke. not sure