What is the purpose of using transition words and phrases in essays?

What is lincoln's purpose in writing this speech? to stress the difficulties of war to honor those who died in the war to call for an end to the war to call the country to join a new war

Andy bernard laughed at my joke, spitting out his water. complete thought incomplete thought

Which best compares the authors’ purposes in silent spring and “save the redwoods”? both authors want readers to protect human rights. both authors want readers to focus on saving trees. both authors intend to entertain readers with their essays. both authors intend to convince readers of their viewpoint.