What connections can be made between the diverse groups mentioned in line 55 - African-American, Mexican-American, Irish-American - and the idea
that “slow-growing domestic traumas like economic unrest and increasing
crime seemed more likely to emphasize division than community?"

it is the code of hammurabi

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.

this is a good question! i'll do some research and come back when i have the answer!

may i ask which amendments?