Until the end of the Second World War, most scientists imagined the ocean floor to look like what

Space is not completely empty. there are small particles in space. what happens when these particles come together?

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries?

Due to seriouse dogmatic differences between the orthodox church and the western christian churches, the orthodox xhurch is not in communication with the roman catholic and protestant communities