It was determined from chemical analysis and observations by the EPA in the 1970's that the Love Canal in New York is considered to have "contaminated with toxic chemicals." Due to these, the canal was furthermore restricted to any human activities taking place due to the hazards it would produce.
Answer:
Correct answer is C. Dividing China's history based on which dynasty ruled the country.
Explanation:
Option C is the only correct answer as we create periodization to divide history into quantified time blocks of time, with a goal to easily research what has happened in the past. Therefore dividing history of China according to the periods of reign of certain countries is one way of periodization.
Option A is not correct as this refers to the ways how someone measured time, not how he created periodization of certain periods and events.
Option B is not correct as this is description of historical events, not periodization of those events.
Last option is also not correct as it shows different accounts of certain historical events, not their periodization.
Sam Houston order the Texans to retreat in March 1836, he wanted more time to train his army
Answer: Option A
<u>Explanation:</u>
Sam Houston ordered his army of Texans to retreat in 1836 because he wanted his army to be well-trained and become stronger to face the Mexicans led by Santa Anna.
The retreat was a planned one. Sam Houston planned the retreat when he heard of the defeat of a small army of Texans by Santa Anna. He ordered his men to retreat and trained them in warfare eventually leading to victory against the Mexicans.
I believe your answers is a..
