I followed an oligarchy? is this 6th grade?
Answer:
The space suit
Though the first man stepped on the moon in 1969, in the 1930s astronomers and physicists were already planning for the voyage to outer space. Emilio Herrera Linares, a Spanish military colonel, is credited with being the first to design a pressurised suit which was used in a high-altitude balloon flight in 1936.
The modern mop
While the mop isn’t the most glamorous of inventions, it certainly is one of the most useful. People had been using rags to wash floors since the 15th century but it was in the 1960s that the engineer Manuel Jalón Corominas had the idea to create a purpose-built mop with a bucket to ring the water out in.
Explanation:
that's just a few ^_^!!!
The answer is A. Grasslands.
<span>The Iron Curtain divided Europe into two halves, east and west. The western democratic countries were on the side of the United States. The eastern communist countries were on the side of the Soviet Union. The Iron Curtain fell when communism collapsed and the eastern European countries became democratic.</span>
I’m pretty sure the answer is D