The chair<span> sets the </span>committee's<span> agenda, determining when—or in many states, whether—bills will be considered. Other responsibilities of a </span>committee chair<span>typically include: Calling the </span>committee<span> together to perform its duties. Presiding and maintaining order over meetings.</span>
The most useful is documentary evidence. Things people have written. Old newspapers, personal accounts, even things like letters, bank records, govt. records, etc. For fairly recent history there are photographs and even films and videos.
But even writing only goes back about 6000 years. Before that there is archaeological evidence. From studying the debris of ancient civilizations historians can determine what their buildings looked like, what they ate, who they traded with, what they thought was
No in fact the battle of iwo jima was not yet over even when the U.S. troops were able to take Mt. Suribachi and raise the american flag they still had a lot of the island to take control of and here's another fact 3 of the 4 flag raisers eventually died after the raising of the flag on the island. hope this helps.
Was a lawyer and nationally respected defender of civil liberties during the post-World War II Red Scare