How was the campaign in the south conducted, and why was the victory at yorktown so significant for the americans?

The British strategy in the south for most of the War was one of attrition, since the British army outnumbered the colonists'. And Yorktown was significant because ended British land operations in the colonies. 

Drs. Richards and Jay both find that women can better distinguish among pleasant odors than men. Dr. Richards proposes that women have more olfactory receptor types than do men. Dr. Jay argues that women have more experience with pleasant odors such as those of foods, flowers, and fragrances. Dr. Richards is proposing a Bottom-Up explanation of the gender difference in olfaction, while Dr. Jay is suggesting a Top-Down explanation.

Explanation: