Before he could issue the Emancipation Proclamation, President Lincoln waited for the selection of a Confederate president. the results of a national vote on slavery. a successful Confederate military action. a successful Union military action.

Before he could issue the emancipation proclamation, president Lincoln waited for a successful Union military action.

Before a successful union military action, emancipation proclamation will be useless because all the States in southern part of United States will oppose the proclamation because they heavily relied on slaves for their plantation operation