I'd say if the trend continues: all the above and full federal governmental collapse.

Compound interest is one of the most powerful forces in the world. Currently interest on the debt is ~19% and is growing at a CAGR of 11.2% per year. At the current growth rate, how long until interest on the debt consumes 100% of all tax revenue?

A ray of sunshine & hope: Many state governments who are both low-debt and fiscally conservative will be fine. We also experience small amounts of this with each governmental shutdown.

Start planting fruit trees so the next generation can eat.

Social security is entirely funded through FICA taxes on payroll. Take a look at your paycheck. Legally money for social security cannot come from debt.

They will be told "lend us money, or else" and that loan will get processed because the alternative is worse.