The Atlantic Ocean.
they have to cross a river the army men and the border
3500 B.C. cross a land bridge.
Polish Red Cross was created in 1919.
alantic
About 3 million
Ellis island
Because there is no trespassing.
cross country
Immigrants cross the border for numerous reasons, including famine, war, drought or persecution in their own countries or to get better jobs, housing or medical services.
you would cross mexico to get to south america.
You would cross the Indian ocean. You would arrive on Australia's west coast.