identify and define the allusion in the sentences from the henrys speech

"it is so in spain, germany, and other parts of the world. let us consider the sentiments which have been entertained by the people of america on this subject"

The allusion in these sentences is to the countries of Spain and Germany.

The speaker is referring to the sentiments or beliefs held by the people of these countries, suggesting that those sentiments should also be taken into consideration when thinking about the subject being discussed.