In many countries, winter is from December to February. Autumn is 3 months before winter. In the autumn, leaves drop to the ground. Many trees have nuts or fruits. Animals may begin to store food. Some birds collect nuts to store. Other birds fly to a warmer place for the winter. They won't return until the spring. Days become shorter. Cold weather is coming. The fur of many animals gets thick because they need a thick coat to protect themselves. People also wear warmer clothes, because the weather is a little colder. In some places there may be rain or even snow, but in many southern places it is still warm. Autumn is also the time when farmers harvest their crops. People look forward to( 盼望) autumn for many reasons. The most important one is that autumn is the harvest season.

学会抓关键词是学习历史的重要方法之一。下列与“南美的解放者”这一关键词相吻合的历史人物是（    ）