Answer:
Revolutionary Industry :
In the late 1800s, workers organized unions to solve their problems. Their problems were low wages and unsafe working conditions.
Workers formed local unions in single factories. These unions used strikes to try to force employers to increase wages or make working conditions safer.
New regulations were imposed to shorten the work each week and to make factories safer.
19th Century
Industrialization substituted steam engines for animals, machines for hand tools, and elevators for ladders.
They got their work done without lifting a finger.
Answer:
The earliest examples of ancient Chinese writing come from oracle bones at Anyang.
The French and Indian War was fought to decide if Britain or France would be the strong power in North America. France and its colonists and Indian allies fought against Britain, its colonists and Indian allies. The war began with conflicts about land.
Well there are 4 types of valves MITRAL,
TRICUSPID, AORTIC, and PULMONIC
whatever answer is not one of the following, it is not a type of valve
i did not see a picture that’s why i listed the valves