If the united states put tariffs on all imported automobiles to domestic car companies which of the following would that be an example of

a.)protectionism
b.)embargo
c.) voluntary trade restriction
d.)import quota

What was the focus of the stanford study-pls

Why did the paris peace conference negotiations last over a year?

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.