How do we know that Bruno’s family is rich

Bruno's family is indeed quite well off. We know this because they live in a palatial, five-story house in an exclusive suburb of Berlin. The house has large windows with extensive views, as well as ornamental features like elegant bannisters. The family also employs a number of servants to attend to their every need, such as Lars the butler and Maria the maid. One would certainly need a substantial disposable income to be able to afford such staff.

Explanation:

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.