<span> Eastern Christianity consists of the </span>Christian<span> traditions and churches that developed in the </span>Middle East<span>, </span>Africa<span>, </span>Eastern Europe<span>, </span>Asia Minor<span>, the </span>Balkans<span>, </span>Southern India<span> and parts of the </span>Far East<span> over several centuries. The term does not describe a single </span>communion<span> or </span>religious denomination<span>. Some Eastern churches have more in common historically and theologically with Western Christianity than with one another. The various Eastern churches do not normally refer to themselves as "Eastern", with the exception of the </span>Assyrian Church of the East<span> and its offshoots.</span>
To my knowledge, the correct answer among all of the given choices is C.) Steam. If I'm not mistaken, this was the time that more trains came into use.
I hope this is the answer you were looking for and that it helps!! :)
