Answer:
The four-field rotation system allowed farmers to restore soil fertility and restore some of the plant nutrients removed with the crops. ... Ideally, wheat, barley, turnips, and clover would be planted in that order in each field in successive years.
Explanation:
It was a continues bombing of Northern Vietnam on orders from president Nixon.
A Historian would look for a primary source (option d. ) - the definition of a primary source is that it was written at the time of the event, and not later (this is the secondary choice).
I’m not sure because their is no reading information
Answer:
It was destroyed by the Almoravids, who took control in the country for the next ten years.
Explanation:
The sacking of Ghana by Almoravids in something that can be seen even as a holy war led to the decline of its power and its trade links. Although their rule lasted for only a couple of years, they weren't able to recover and to extent their trade once more as they did before this event.
