My biggest obstacle that he faced was not finding the northwest passage
The isthmus of Panama
finding a dog
Verrazano's biggest problem was that his ship sinked and drowned
chocolate
Verrazannos biggest obstacle is
Octavian was Cleopatra's biggest obstacle.
her biggest obstacle was when her father was drinking.
every body had to face an obstacle in there life
the biggest obstacle is that I always buy what I want not what I need
Light pollution is the biggest obstacle to stargazing on long island.
Until the next Congress his biggest obstacle is the House which is controlled by Republicans. The biggest obstacle to most of his programs is lack of money to pay for them without raising taxes.