What did the private investigator hired by chris' parents use to start finding him

Chis' parents hired private investigator peter kalitka, who worked for the cia i believe. he started with the ticket chris had recieved at willow creek.

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years