The answer is B. Scientists study artifacts they discover to form ideas on what life was like in the past. Sometimes there will pieces that doesn't make sense and so they study some more until it makes sense.
The reasons to oppose slavery were morality, and the hash treatment of slaves
The correct option is A
The bureaucracy is necessarily hierarchical, first because of the iron law of the oligarchy and secondly because the bureaucracy grows adding more subordinate layers. As in the absence of a market there is no genuine proof of "merit" in government service to consumers, in a bureaucracy limited by rules, the hierarchy is often used as representative of merit. Increasing the hierarchy leads therefore to the promotion to the highest levels, while the expanded budgets take the form of multiplication of levels of ranks under you and expand your income and power. The bureaucratic growth takes place, therefore, multiplying the levels of the bureaucracy.
The Amazon river is longer than the Nile.
