The Second Continental Congress aimed to manage the colonial war effort against Britain and to push for independence, making it a crucial step towards the formation of the United States.

The Declaration of Independence is a pivotal document that formally announced the Thirteen Colonies' separation from British rule, asserting their right to self-governance and outlining grievances against the British monarchy.

The correct answer is 'Professional soldiers hired to serve in a foreign army' because mercenaries during the American Revolutionary War were typically foreign troops contracted to fight, rather than local militia or spies.

The Continental Army was formed by the Second Continental Congress in 1775 to coordinate military efforts against British forces during the American Revolutionary War, making it a key element in the fight for independence.

In the context of the American Revolutionary War, a "traitor" refers to a person who betrays their country, typically by supporting the opposing side. This aligns with the correct answer choice.

The Battle of Saratoga is considered a turning point because it convinced France to support the American cause, providing crucial military assistance that helped change the course of the war.

The Olive Branch Petition was a document sent to Britain in 1775, aiming to prevent war by expressing loyalty to the crown while seeking a peaceful resolution to colonial grievances. Thus, it sought to avoid a full-scale war.