John Adams was the second president of the U.S.
Hey Jasmine812!
The Incas used khipu, the system of recording numbers by tying knots on strings! The numbers were indicated by knot type and position on the cord.
I hope this helps!
Answer: Britain
During the early 20th century, Britain was considered to be one of the most powerful and biggest empire on Earth. Almost one-fifth of the Earth's landmass is occupied or belong to Britain. The vast space that they has become a big advantage for them.
