QUIZ: While traveling across the great expanse of the North American continent when....

.... (and why) are you constantly veering to the right? Conversely, when are you constantly veering to the left?

QUIZ: The Romans were great engineers and especially fond of straight roads. Imagine how snarled Rome's traffic must have been and how extremely difficult it was for the average Roman citizen to see the rest of the world--because all roads led straight to Rome.

Nevertheless, the Welshman, Thomas Jefferson, resolved that boundaries, borders and property lines in his newly acquired American Midwest and West should follow straight lines rather than meandering alongside rivers, forest lines and other naturalboundaries as it had in the original colonies. Jefferson's earlier experience as a surveyor had taught him that natural boundaries tend to shift with time through erosion and other natural means. His new system of straight lines has often been referred to as a continental quilt. Roads, highways and interstates (motorways) soon followed:

1. When is it necessary while driving across the expanse of the North American continent to continually veer to the right?

2. Conversely,when are you constantly veering to the left?