The agricultural revolution, or the Neolithic Revolution, was when nomadic tribes, found out all about agriculture and started growing crops. The upside and advantage of this was that now, the tribes had a constant supply of food. That means that they didn't have to hunt every single day to look for vegetation or meat.
The disadvantage of this was that to grow crops, you had to stay in a certain place for a long time, to tend for your crops and wait until they grow. So they had to stay in one place for a long time. This wasn't exactly ideal back then because other tribes could come and attack you or diseases could easily spread between tribes for being too close for a long time. Hope this answer helps.
They spread like wildfire. For a new factory to beat the competition, it had to be built quickly. Laborers needed fast, cheap housing located close to work. Roads would be hastily built to connect the factory with the market. There was no grand design, and consequently, the new American city spread unpredictably. Urban sprawl had begun. But the growing beast brought benefits that raised the standard of living to new heights. The modern American city was truly born in the Gilded Age. The bright lights, tall buildings, material goods, and fast pace of urban life emerged as America moved into the 20th century. However, the marvelous horizon of urban opportunity was not accessible to all. Beneath the glamour and glitz lay social problems previously unseen in the United States.
D. Austrian refusal to partial negotiations
3/4 = 12/x
this is a proportion, so we cross multiply
(3)(x) = (4)(12)
3x = 48
x = 48/3
x = 16
now notice this.....12/16 reduces to 3/4....probability's are nothing but equivalent fractions
He is an apprentice training to learn a trade