Which events in 1917 caused the united states to enter world war i? check all that apply.

britain intercepted the zimmerman telegram.
germany sank the passenger ship lusitania.
mexico attacked the united states on us soil.
germany resumed unrestricted submarine warfare.
britain and france asked america to join the war.

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:

john maynrd keynes developed new economic respose to the                           ( b. great depression if the 1930's)