The role of the president "to lead the country" is very important.
Without a leader, we would be divided, and "united we stand, divided we fall"
its a simple as that, without a leader, we would be a lot more divided than we are now and without the president, well, there might be chaos
hope this helps
1 . The meaning of boo is to suddenly surprise someone.
Or , to show dissatisfaction and disapproval.
Also, a slang you could call your lover.
2. A boo could mean boyfriend or girlfriend .
3. Anyone calls anyone boo I guess .
The answer is: Water management projects created huge reservoirs and lakes where there had been dry canyons.
The National Reclamation Act of 1902 was a federal law that was passed in order for the federal government to start major irrigation projects in the West.
The result of these major projects was the creation of complex structures and systems(reservoirs and lakes) that would allow for the transformation of arid lands into farm capable lands.
The answer is definitely D.
MIT defines calculus as the study of change, usually in motion.
I worked the problem out to show you