Fill in the blank. 15th century navigators had a problem determining the angular distance of a point's meridian from the Prime (Greenwich) Meridian. It was only in the 18th century, with the invention of the chronometer, that a solution was found. This angular distance is called ____________.

MCQs on the history of Latin and South America from the year in which European explorers first discovered and began to colonize the region to the early 19th century, when many Latin and South American colonies declared their independence from European rule.