The name of the event happened when Middle eastern muslins contacted the bantu villages for trade is called: arab slave trades.
Muslims made contact with the Bantu to negotiate slaves, at a time when many countries in Europe, and other countries including the Kingdom of Arabia, used slave labor. The African natives who were adherents of Islam could not be enslaved by the Muslims, as this would go against the principle that free Muslims could not be enslaved.
This is actually a good question because people confuse fear and phobia often.
A fear is being afraid of something, like climbing a mountain because you're afraid you might fall. But a phobia is an anxiety disorder and has to be diagnosed. Phobias don't pose a threat. Phobia would be a fear of the number 13 and getting anxiety when you see a 13 (it's a real phobia, too).
<em>The correct answer is</em> "All can be measured".
There are seven SI basic units (the kilogram, the second, the kelvin, the ampere, the mole, the candela, the meter).
So from the given options length can be measured by meter (m^3), for density kilogram per cubic meter(kg/m^3), and for temperature is kelvins(K).
