The last one - notice use of slang terms like "kids", "cutting class" and "big deal", which indicate an informal tone. This contrasts more official vocabulary like "students", "truancy" and "issue of attendance", which are used in the other sentences to convey a more formal tone.
Hope I could help!
The egyptians use the two tone.the had two pipes of unequal length
Your answer is that the main reason is that people buy land and they needed to get money which means there really greedy people so the buy slaves and force them to work for little or no money so they can sell crops (they made the slaves become farmers) to make profit then they would buy more land and get more slaves to work as farmers on and on. So it spread because one guy did it and he made a lot money and other people wanted to do the same and that's how slavery spread through North America.
1. International: struggle for hegemony and Empire outstrips the fiscal resources of the state
2. Political conflict: conflict between the Monarchy and the nobility over the “reform” of the tax system led to paralysis and bankruptcy.
3. The Enlightenment: impulse for reform intensifies political conflicts; reinforces traditional aristocratic constitutionalism, one variant of which was laid out in Montequieu’s Spirit of the Laws; introduces new notions of good government, the most radical being popular sovereignty, as in Rousseau’s Social Contract [1762]; the attack on the regime and privileged class by the Literary Underground of “Grub Street;” the broadening influence of public opinion.
4. Social antagonisms between two rising groups: the aristocracy and the bourgeoisie
5. Ineffective ruler: Louis XVI
6. Economic hardship, especially the agrarian crisis of 1788-89 generates popular discontent and disorders caused by food shortages.
Not sure which are the three main but those are some.
