Answer:
Air is the part of the lithosphere
<span>Eric Foner believed that freedom is an effective theme
to focus on in the study of American history because of what happened in the
past during the American civil war the nation faced many controversial issues
such as slavery. Because one of the problems of this American period was
slavery. Furthermore, over three million African-Americans were slaves in the
South and this means that they worked for other people but had no freedom and
received no money for their work.</span>
The Russian Revolution of 1917 was one of the most explosive political events of the twentieth century. The violent revolution marked the end of the Romanov dynasty and centuries of Russian Imperial rule.
