Is this right? thanks

Relatively steep zone that is compared with the shelf that marks the boundary between continental crust and ocean crust.

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain

When the soviets created the borders of their central asian and caucus republics, the paid little attention to where each region’s ethic group lived. ethnic-related disputes exist along every sherd boundary in central asia. true false