When working on a major project, brainstorming topic ideas is not a good step for keeping the overall scope in mind
Appointing new judges who in principle have philosophies consistent with the president.
Dear Ma'am/Sir You Didn't add a photo so I can't answer your question correctly.
The name for this idea is "Domino Effect" - this is a theory that says that if one country falls to Communism the neighboring countries would also fall to Communism, much like pieces of Dominos fall when a neighboring piece fell.
This theory was important in the Foreign politics of the US during the cold war.
The correct answer is the Battle of Port Hudson (also known as the Siege of Port Hudson.)
This battle took place from March of 1863 until July of 1863. This battle between the Union and Confederacy fighting over a strategic location along the Mississippi River. The goal of the Union army was to take over Port Hudson from Confederate control. Continuing to take over different ports along the Mississippi River would give the Union a significant advantage, as it would limit the amount of supplies the Confederates could send to each other.