Question

The "War Hawks" were:
a flock of aggressive, predatory birds
representatives from the North who supported continued trading with Great Britain and war with France
frontier settlers and farmers of the West and South who wanted to expand America's frontiers
sailors who were victims of British impressment and wanted revenge

Answer 1

The "War Hawks" in the United States were mainly "frontier settlers and farmers of the West and South who wanted to expand America's frontiers," although this phrase can apply throughout world history to mean any group that is in favor of war. 

Answer 2

The "War Hawks" were:

frontier settlers and farmers of the West and South who wanted to expand America's frontiers