Great Britain attempted to sway the United States to support the Allies by highlighting every German atrocity inflicted on the Allies to stir up anti-German sentiment in the United States.
To threaten or feel unsafe
The Royal Road was an ancient highway reorganized and rebuilt by the Persian king Darius the Great of the first Persian Empire in the 5th century BCE. Darius built the road to facilitate rapid communication throughout his very large empire from Susa to Sardis.