The three Sierra Madre (Occidental, Oriental and del Sur) mountain ranges difficult road movement in Mexico.
because there was no place and Mexico is small
no unless you want to risk going back to prisin
why was travel across the Sahara desert difficult
If you mean NEW Mexico, no; it would be a domestic travel. If you mean Mexico the country, yes, it would be international travel.
If you live in Mexico then no.
He traveled to Mexico.
why was travel across the Sahara desert difficult
From the US? It is international travel. If you mean NEW Mexico, that is domestic travel, though.
No
1519
South.
The Gulf of Mexico.