How did the framers of the constitution ensure that there would be continuity of power in the u. s. government during the aftermath of a national crisis?

The framers planned for continuity during a national crisis by creating the Presidential Line of Succession.

So far, this has only been applied when the President is killed and the Vice President takes their place.

But the line goes much deeper.

Attached is the current line of succession under President Trump.

In January, Paul Ryan will be replaced by Speaker Nancy Pelosi (D).

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.

the answer to your question is,

d. when a child was born.

-mabel < 3