Full question is: Did 9/11 happen due to various forms of “blowback” from poorly planned, exploitative, and/or repressive US foreign policies of the last century, or is this wrong-headed excusemaking?

Use a standard font (Times, Courier, etc.) and size (12 point) and normal margins (1 inch)
 Page numbering is required
 Avoid informal language or contractions
 Make an argument and take a side; do not just describe the issue
 Have evidence, cases, and proof to make your argument; do not use personal examples
 When using evidence or quoting, you must do citations, or it is plagiarism
 When citing a source, you may use any accepted method (footnote, endnote, parenthetical)
 Have a bibliography at the end on a separate page, which will include author, year, title,
publisher (and web site address if needed) It needs to be 16+ pages long. Use standard formatting (double-spaced,12 point Times or Times New Roman, normal margins, page numbering,etc.). Do not do a Title Page or sub-headings. Do a Works Citessection (which will not count for length). You must use at least 6legitimate, mainstream sources with many proper citations throughoutusing the APA Style. Do check your spelling, grammar, page numbering,etc.