Cultural as well as biological factors. Things such as age, economic class, religion, gender, ethnicity, and race. <span />
False...
before 1941 The US declared itself neutral in European affairs. Roosevelt did however support Britain through the Lend-lease Act which in a sense did not mean the US was militarily intervening before Pearl Harbor
A historian using the historical thinking skill of chronological thinking might put evens that took place in history in "chronological order" in the hopes of understanding why certain events took place after others. This helps the historian determine "cause and effect".
Views of Euclid's Parallel Postulate in Ancient Greece and in Medieval Islam? i hope it helps