Was the seizure of the Philippines and Puerto Rico a significant departure from US norms or simply a continuation of US policy in the 19th Century?

Was the seizure of the Philippines and Puerto Rico a significant departure from US norms or simply a continuation of US policy in the 19th Century? Why or why not?1. http://www.digitalhistory.uh.edu/disp_textbook.cfm?smtID=3&psid=12832. http://www.digitalhistory.uh.edu/disp_textbook.cfm?smtID=3&psid=13733. http://www.digitalhistory.uh.edu/disp_textbook.cfm?smtID=3&psid=12574.https://collections.library.cornell.edu/moa_new/index.html?c=nora;cc=nora;rgn=full%2520text;idno=nora0168-1;didno=nora0168-1;view=image;seq=5;node=nora0168-1%253A2