Factbox - Dakota Access Pipeline's long journey

(Reuters) - U.S. President Donald Trump signed an executive order on Tuesday allowing the Dakota Access Pipeline to go forward, after months of protests from Native American groups and climate activists pushed the Obama administration to ask for additional environmental review for the controversial project. The U.S. Army Corps of Engineers in December turned down the request for an easement for the Dakota Access Pipeline to build under the Missouri River. The following is a timeline of the proje