Sahara is a desert and deserts are hard to cross. Sahara is especially bad and potentially deadly: it's very dry and there is no water to be found for miles.
Therefore it was a barrier and it has isolated South Africa from European influence for a long time. (until the time of European explorations)
It’s A
Could I have a brainliest? I really need it to upgrade to the next rank :))
31.8 degrees north of east (not sure what format the question wants)
To get this answer you draw a triangle with the line between the ship and the harbor, a line going horizontally, from the ship and ending below the harbor, and a line going vertically down from the harbor to the end of the horizontal line. The horizontal line has a length of 50 and the vertical line has a length of 31. Using inverse tangent, you can find the angle between the ship and the harbor, which is
arctan(opposite/adjacent) opposite being the vertical line, and adjacent being the horizontal line
arctan(31/50) (or tan^-1(31/50))
which gets you 31.8 degrees
Mauna Loa is the volcano that dominates the southern portion of the island of Hawaii.