Certain social classes changed in the transition from the Roman Republic to the Roman Empire." Which of these supports this statement?

Marcus Aurelius promoted army officers based on merit, rather than their social standing.
Hadrian put an end to Rome's territorial expansion.
Trajan led an extensive public building program in Rome.
Diocletian established a tetrarchy to deal with "the Crisis of the Third Century."

interest groups send representatives to state capitals and to washington, d.c. to put pressure on members of congress and other policymakers. they engage in lobbying, or the organized process of influencing legislation or policy. lobbying can take many forms. interest groups can testify in congressional hearings.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.

the mothers played a major role in confronting the government and ending the war.