Who has the power in the united states to declare war?

president
the senate
secretary of state
congress< < < <

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

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

Which of these fragmental sedimentary rocks would most likely form farthest from the land?