What sentence best describe frustration

Which us president proposed a decimal based measurement system for the us

Which phrase correctly completes the statement? "the korean war " lasted 3 years. has never ended. was won by north korea. was won by south korea lasted 3 years. has never ended. was won by north korea. was won by south korea.

What caused the settlement of more african americans in the mississippi alluvial plain region than in the ozark mountains point)