Explanation:
The Aztecs, now led by Cuauhtemoc, succumbed to smallpox fever, which had been brought by one of the Spaniards, after 93 days of resistance on the fateful day of August 13, 1521 CE. The city of Tenochtitlan was sacked, and its temples were desecrated.
American settlers continue to spread to the west and took land from Native Americans. As expansion continued, agreements were signed and they were broken with native americans losing their homes and land and force to move west. As Native Americans were forced to more to the west, they are not able to adopt to the environment they are moving to, so they died due to lack of food or diseases.
The Internal Combustion Engine was an invention of a British Engineer named Edward Butler in 1884. He was also the first person to use the word 'petrol' which we now know as petroleum or gas.