Which aspect of the roman catholic church established in the 300s remains today?

Here’s the first one let me send the next page of the passage

Which country was an ally of the united states during world war ii? germany china japan italy

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need