1) The role of the judiciary is to interpret laws, resolve disputes, and ensure justice in accordance with legal principles and the constitution. It serves as a check on the executive and legislative branches of government.

2) The Industrial Revolution, which began in the 18th century, brought about significant changes in agriculture, manufacturing, mining, and transportation.

3) The windshield wipers were invented by a woman named Mary Anderson in 1903.

4) The word "oxygen" contains two vowels: O and E.