The priests and explorers who traveled the world
worked hand-in-hand
often fought between themselves
usually treated the native inhabitants poorly
had very different goals which often brought about the same end

usually treated the native inhabitants poorly

Explanation:

The explorers  almost always had priests with them on their ships. Both had different reasons for exploration, the explorers had wealth in mind, while the priests to convert more people to their faith and thus increase their influence. What they shared between them was that they often treated the native inhabitants very poorly. The explorers were torturing them, killing them, stealing gold and silver from them, using them as slaves. The priests on the other hand were forcing them to accept their religion, and were trying their best to erase their own native religion, often using brutal measures to achieve their goals.

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".

the answer is states.