prominent russians: the romanovs. the romanov dynasty (1613 to 1917) was the last imperial dynasty to rule russia. during the romanov reign russia became and remained a major european power. the romanovs share their origins with a handful of other russian noble families.
there was a general fear that the european powers, especially spain, would try and retake some of their territory in the western hemisphere.
as a result, the monroe doctrine stated that the united states would not tolerate european meddling in the western hemisphere.