Answer:
The numbers indicate the amount of air pressure, in millibars, that each line represents. These lines and numbers are necessary find out exactly where High and Low pressure systems are on the maps.
Some colonists became skilled craftsmen in the Middle Colonies because it ended up not being enough open farm land for everyone to farm and there was, at that time, not enough of other trades so instead of farming, they went to craftsmanship. Most of the farm land was also covered with a lot of forestry and at the time, tree removal was a very long and lengthy process; this meant that land would open up at a painfully slow pace. Basically, they didn't have much of an option to go to other avenues to make money.
A vernacular region may also be called a perceptual region.
El límite entre dos cuencas se denomina como una separación de drenaje o límite de cuenca hidrográfica. Componentes de vertiente de drenaje.
Yes it is within the past 500 years.
ps. could i please get a brainliest please