Who were the conquistadors , and what special favors did they receive from spanish rulers? what did they have to do in return?

They were Spanish people who explored land & the rulers gave them the right to explore & make settlements. In return they agreed to give Spain 1/5th of anything they found.

entering that problem on the tube you may come up with an answer

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.