True
At the western end of the Roman Empire there was the Strait of Gibraltar, between present day Spain and Morocco. There was not a straight at the eastern end of this empire, whose border where the Arabian desert and the Armenian Highlands. Straits in the eastern Mediterranean are the Bosporus and the Dardanelles (between European and Asian Turkey), the Strait of Rio, at the western end of the Gulf of Corinth, Greece.
the
The eastern and western hemispheres are each 12 hours wide, and along half of the boundary between them, the day changes. So, depending on what point you pick in each hemisphere, the time in the western hemisphere could be anywhere from 12 hours earlier to 23 hours earlier than the time in the eastern one.
in the northern and Western Hemisphere
The Mississippi River forms the western boundary of Illinois.
western
The Mississippi River forms the western border of Illinois.
eastern is the Mississippi river and the west is the rocky mountains
Mississippi river
Mississippi river
Western
Illinois is bordered by the Mississippi River on the west.
The Mississippi River forms the Western border of the States of Illinois, Tennessee, and Mississippi. The Mississippi River forms the Eastern border of the States of Iowa, Missouri, Arkansas, and Louisiana.
Ohio River
Illinois is bordered by the Mississippi River on the west.
The state of Mississippi is south of Illinois. Illinois is bordered by the Mississippi River on the west.