The answers b, another name for Columbus Day. Not 100% but yeah
The answer is B. the United States.
The line is "I pledge allegiance to the flag of the Unites States of America."
The answer is B for question #1
In the year 1948 in Donora (Pennsylvania) smog killed 20 people and sickened about 7,000. The sulfuric acid, nitrogen dioxide and other toxic gases were caught in the thermal inversion and accumulated. It was one of the worst air pollution disasters in the history. Answer: C ) a thermal inversion and stagnant weather conditions.
Answer:
Knowledge of the environment stimulated the quest to colonize regions that could provide many natural resources capable of stimulating the empire's economy.
Explanation:
The imperial expansion between 1450 and 1750, refers to the political, economic and social process, which allowed European nations to take over other nations with the intent of promoting the European empire in the economic and even cultural spheres. In that case, European nations exploited the resources that the nations dominated by them could provide.
The knowledge of the environment, allowed the imperial expansion to search for nations in regions that could provide a vast amount of natural resources that would supply the European nation and that would allow a profitable trade between countries.