U.S. Declaration of Independence-Preamble

As I read through the document one word consistently stuck out for me and that was "He". The beginning of the article uses "people" when referencing those included within the rules, laws, and obligations of the document, but as you read further down the "peoples" turn into "He". For the time that this declaration was created I understand why the drafters used "He", but I do not understand why the article starts out using "people" which can encompass more than just males, but than switches over to flat out saying "He (males)". I also wonder if any of the drafters of this document tried to write the declaration in non specific words because they knew that times were becoming revolutionary and changing and evolving in ways that they never could have imagined. Thus, the declaration has not had to be completely re-written for the sake of evolving times.