What contribution did the J. B. Beard Company make to the war effort? O It specialized in making ships.
O It made advances in flight technology.
O It developed a new boat to help with sea-to-land invasions.
O It manufactured shell casings and tank parts.

D it manufactured shell casings and tank parts.

Explanation:

"J.B. Beaird Company manufactured shell casings, anchors, and tank parts."

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:

wisdom

explanation:

the fact that that the teachings on the cosmic order comes from, or through, the heart center