The correct answer is letter C.
Explanation: A simple and inexpensive way to improve soil fertility is by installing green manure or mulching, which adds organic materials and nitrogen to the soil, increases biological activity and recovers leached (washed) nutrients to the deepest layers.
Answer:
When the king needed to wage war by sea, he relied on the temporary.... the sea, commands the trade; whosever commands the trade of the world.
for one thing they didn't teach the slaves to read or write so they would be unintellegent and they would not know of what they could be. they taught them that they are meant to serve
