-
A major advance occurred in Europe around 1300 with the invention of the escapement, which allowed construction of the first mechanical clocks, which used oscillating timekeepers like balance wheels.Spring-driven clocks appeared during the 15th century. During the 15th and 16th centuries, clockmaking flourished. The next development in accuracy occurred after 1656 with the invention of the pendulum clock
-
The Black Death arrived in Europe by sea in October 1347.trading ships docked at the Sicilian port of Messina after a long journey through the Black Sea.Most of the sailors aboard the ships were dead, and those who were still alive were gravely ill.
the black death kill 20 million people. -
Locks are used to make a river more easily navigable, or to allow a canal to take a reasonably direct line across land that is not level.
-
Industrial revolution started
-
lol
-
-
drug could be in injected in to people in pain
-
-
the Steam engines powered all early locomotives, steam boats and factories, and therefore acted as the foundation of the Industrial Revolution.
-
-
-
-
-
Samual Morse invented the telegraph
