Answer: The churches along pilgrimage roads housed weary travelers, provided opportunities for prayer and meditation along the spiritual journey, and even sold trinkets and souvenirs to remind pilgrims of their trip. This meant that churches developed some unique needs, and architectural styles had to change pretty quickly
Explanation:
They had to build d reservoirs and irrigation ditches to control river flooding
The PPC (or PPF, same thing) shows economic growth because it outlines exactly what the economy can produce at that moment. When it shifts outward in any way (be it towards consumer and capital goods, or X and Y), that MUST be because of economic growth.
