Why did the United States experience a period of nationalism during President Monroe's presidency? A. The country had won a war against Great Britain and had a rapidly growing economy.
B. The country had finished building roads, canals, and railroads connecting the North, South, and West.
C. The country had won its independence from Great Britain and established a strong army and navy,
D. The country had finished expanding its borders to the Pacific Ocean and concluded of series of
treaties