Boats and ships are mainly over seas and on land is mainly carages
During the twentieth century, the study of the large-scale structure of the universe evolved from the theoretical to the practical; the field of physical cosmology was made possible because of both Einstein's theory of relativity and the better ability to observe extremely distant astronomical objects. Option A is correct.
Albert Einstein formulated two theories which he included to his theory of relativity. On the one hand the special relativity and on the other hand, general relativity.
The former refers to the lack of gravity and the physical phenomena that occurs because of it and the latest refers to the law of gravitation.
Abraham Lincoln Abraham Lincoln Abraham Lincoln
I'd say B is the correct answer. Both China and the Roman Empire were huge during their golden ages. Apparently the Chinese knew of the existence of the Romans and thought it was their counterpart. Like Yin and Yang. I think they never really met though. Chinese envoys managed to reach the black sea but didn't get any further.
I deviated from the actual question sorry^^ I think B is correct
D. All of the choices are correct