Precambrian is the era that makes up the vast majority of the Earth’s history.
Answer:
b
Explanation:
Magna Carta and the English Bill of Rights are both historically significant documents; while the Magna Carta was meant to serve as a peace treaty between upset barons and King John, the English Bill of Rights ensured that the monarchy within England didn't hold too much accumulated power, and thus gave more power to the king
Answer: Air brakes
Explanation: The introduction of air brakes by George Westinghouse marked one of the most important safety upgrades in railroad travel. The air brakes which is powered by compressed air connected to the braking cylinders which automatically serves air to the brake pipes once the brake pressure falls. This automatic airbrakes offered an escape from the inefficient and manual brake system usually employed before it's invention whereby brakemen are charged with the task of controlling the braking system using the brake wheel in other to alt the train's movement. This manual method is both tedious and unsafe.
Answer:
Lazy Bones
Explanation:
Zenith created the "Lazy Bones," the first television remote control, in 1950. The Lazy Bones could change the station and volume of a television, as well as switch it on and off. However, it wasn't a wireless remote control. The Lazy Bones remote control was connected to the television by a thick, lengthy connection. Customers worried about stumbling over the cable even though they liked being able to operate their televisions remotely. Five years later, the wireless TV remote control would be created, putting an end to this problem.
Answer:
B. European countries claimed and fought over land already inhabited by Native Americans
