The battle between the Merrimack and the Monitor showed that
A. new technology gave the Union an advantage.
B. surprise attacks were effective.
C. the South had better ships than the North.
d. the North and South were equally matched at sea.

The settlement of the Americas is widely accepted to have begun when Paleolithic hunter-gatherers entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum.