How does geography play a role in Mexico City's air pollution problem? O A The city is surrounded by a tropical rainforest, which traps air pollutants.
OB. The cars and factories send pollution into the air, which increases air pollutants.
OCThe city is surrounded by the Sierra Madre Mountains, which trap air pollutants.
OD It is one of the world's largest and most populated cities, which increases air pollutants.

OB

Explanation:

There are an abundant amount of factories in Mexico City which cause cancer and disease, as well as pollution.

OB because the pollution was caused by cars and factories

Explanation:

i believe the answer is:

-   william jennings bryan is a democrat while mckinley was a republican

at that time, the segment of population that choose for democratic party were the voters with low economic background and vice versa

- william jennings has support of populists and wants to have inflation to farmers while mckinley has support of bankers and businessmen , doesn't want inflation

the fixed value of gold make the large business able to stack up their gold without   being worried that it would devaluated.

- william jennings supported the silver standard while mckinley supported the gold standard

according to jenning, using other metal beside gold could the poor people to have more purchasing power and them advance in the society.

"the sepoy rebellion was the result of many, many influences and stressors on the cultures of india living under british rule. in britain, it's called the sepoy mutiny on the indian mutiny, but in india, it's called the first war of independence.

the main reason is concerned to the british paramountcy , the belief in british   dominance in india political, economic and cultural life had been introduced in india about 1820."

"they were forced to grow crops that benefited the colonizing nations instead of feeding their own people."