The correct word is "precedent"
Many of George Washington's customs that he set while President became the precedent by which other Presidents acted.
The most famous was, until FDR, the two term limit for Presidents.
After FDR, two terms would be codified.
Glucose is produced in the mitochondria. :)
The first European to find an ocean trading route to India. He accomplished what many explorers before him could not do. His discovery of this sea route helped the Portuguese establish a long-lasting colonial empire in Asia and Africa.
C. The Southern blockade was working.
If the instant communication of today had been available when Europeans explored the world, this could have affected events by lowering people's curiosity on what to discover and this could have sped up competition.
