From 10th to 13th century, Chinese farming in the South China region was increasingly commercialized.
Explanation:
There was a burgeoning increase in trade during that time. This meant that the agriculture of china was at that time
-- commercialized to a great extent making cash crops more than the ones needed for subsistence.
-- using the cash crops and trading with northern china
--use of old tools but with some moderns arrangements like the till.
--use of a manure style that would be copied across the world
--finding of trade networks in collaboration with south east Asia.
-- a network of multi season crops spread across the land.
The right option is the US dollar has become stronger. When this occurs, purchase power increases if compared to foreign goods and services, enabling US citizens to benefit from those. Certainly, tourist sites getting crowded and dirty is a risk that must counted on, perhaps not the ideal situation for anyone.
Answer: They couldn't control the gulf after the Spanish-America war
Explanation:
After the Spanish-America war, owning the canals became a military and economic imperative to America despite they acquired they acquired the empire before the war, although they wanted to move warships and business between Pacific and Atlantic ocean.