Answer: A, The Franklin stove invented in 1742. The Franklin stove is a metal-lined fireplace named after Benjamin Franklin. It had a hollow baffle near the rear (to transfer more heat from the fire to a room's air) and relied on an "inverted siphon" to draw the fire's hot fumes around the baffle.
Explanation: Not D
Although Franklin did not invent it, he designed an odometer and attached it to the front wheel of the letter carriage, the odometer measured the number of revolutions of the wheel.
Darius I was the third king of the Achaemenid Empire, and is
mentioned on several biblical books. He had several achievements during his
reign and conquered several kingdoms and cultures, estimated 44% of the world’s
population. One of his major achievements was making Aramaic the official
language of his empire, which helped streamline transactions and documents. So the correct answer is 2.
d} the roles of members of the family and of diffrent people in society
That would be D.The Warsaw Pact. The Warsaw Pact was a treaty undertaken by the Soviet Union and her sister communist countries in Europe, the Middle East and Asian in which the Soviet Union used to strengthen the hold of communism on the countries in the Warsaw Pact.