It depends which colonies you are referring to.
pi is a big anwser
Spain's two most important colonies in the Americas were Mexico and Peru. Those two colonies had the rich mines.
Virginia
accidents and curiosity
Because he opened two major continents to world discovery,
Cotton and Tobacco
He explored Greenland, and established two colonies there.
The british planned to divide the colonies in two
He explored Greenland, and established two colonies there.
The Hudson and Potomac.
In the 1760's, half of the two million people living in British Colonies lived on the Atlantic Coast. They lived east of the Appalachians.
Discovery of wheel is most important discovery for travelling . Then invension of motor. These are two most important invensions which helps us to travel long distance easily. This can be possible only because of science and technology.