"Again, another marked characteristic of the Anglo-Saxon is what may be called an instinct or genius for colonizing. His unequaled energy, his indomitable perseverance, and his personal independence, made him a pioneer. He excels all others in pushing his way into new countries." - Josiah Strong, American Protestant clergyman, essay on Anglo-Saxons, 1891

The sentiments expressed in the quotation above are most supportive of which of the following concepts?
a) Nationalism
b) Imperialism
c) Liberalism
d) Marxism