Which of the following WWII advancements allowed submarines to
be tracked during naval battles?
A. OSRD
B. RADAR
C. SONAR
D. USAF

Sonar was developed in WWI to help locate icebergs and submarines

But in WWII scientists futher developed sonars which now helps in oceanlogical advancement and research

in november 1781, john hanson became the first president of the united states in congress assembled, under the articles of confederation. many people have argued that john hanson, and not george washington, was the first president of the united states, but this is not quite true.

explanation:

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation: