Uh...I don't have a clue for 2 and 3... So... help?

for 2 use this info

Hong Kong is officially known as the Hong Kong Special Administrative Region. Hong Kong has one of the world's most thriving economies and is a hub for international trade and investment. A cosmopolitan city, Hong Kong weaves Western and Asian influence into a world-class center of business, culture, and trade.

for 3 use this info

International trade is known to reduce real wages in certain sectors, leading to a loss of wage income for a segment of the population. However, cheaper imports can also reduce domestic consumer prices, and the magnitude of this impact may be larger than any potential effect occurring through wages.

Explanation:

Here is some info I found for you, there from these sources

question 2:

...https://www.hongkongatlanta.com

question 3

https://wol.iza.org/articles/how-does-international-trade-affect-household-welfare/long#:~:text=International%20trade%20is%20known%20to,potential%20effect%20occurring%20through%20wages.

Explanation:

Hong Kong was originally a sparsely populated area of farming and fishing villages.It currently  has the largest number of skyscrapers in the world. It's very densly packed leading to a spike in public transportation.

3: I'm guessing its asking how trade affects Hong Kong.

3: Hong Kong has a free trading port which means no tariffs on the importation and exportation of goods. So it's a center for global trade

hitler was elected as a strong leader by germans who felt angry following the treaty of versailles.