What pivotal event led the united states to enter world war ii?

The bombing of Pearl Harbor by the Japanese military was the pivotal event that led the US to enter World War II.

On December 7, 1941, the US naval base in Hawaii was attacked by the Japanese. This attack resulted in the deaths of over 2,000 American citizens and military personnel. The day after this attack, President Franklin D. Roosevelt gave his famous address to Congress, asking them to declare war on Japan. The US officially entered World War II on December 8, 1941.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

because other regions has other things that egypt doesnt have.