Answer:
His theory of universal gravitation revolutionized astronomy.
Portugal is the European Kingdom that led in European Exploration in the 15th Century in the age of discovering, exploration and mapping coasts of Africa, Canada, Asia and Africa. Under the leadership of Prince Henry the Navigator, Portugal took the role to search for a sea route to Asia by sailing south around Africa, and during this process, Portugal accumulated wealthy knowledge on the geography and navigation of the Atlantic ocean.
In the last decade, Christopher Columbus crossed the Atlantic Ocean and "discovered" a new continent while searching or a sea route to the Indies.
In 1498, Vasco da Gama led the first fleet around Africa to India.
He was sentenced to 10 years in prison. After 21 months, he and other Americans were traded for KGB Colonel Vilyam Fisher aka Rudolph Abel. Captured in NY in 1957.
Because of the “separate but equal” rule, segregation was legalized in the United States. This allowed separated schools, restaurants, water fountains, bathrooms, buses, etc. to continue discriminating against nonwhite people. The places designed for people of color were often of far worse quality and definitely *not* equal, but as long as white people claimed that it was, segregation was allowed to continue without any courts interfering.