What is the name of the syatem in which each branch of the u. s govertment can limit the action of the other branches?

Allocation of distinct but equivalent controls within the three offices of the US Government is called Separation of Powers which is the unique aspect of the American constitution.  

System of checks and balances allows scrutiny of one division over the other. It is appreciated by the whole world who desired complete democracy. This system ensures that no branch of the US Government becomes too influential while wielding their commands.

For example president can reject the laws that are passed by the congress and the congress can overrule the veto of the president if it is required. Thus the presidential power is delimited and all the three branches are given with equal value of responsibilities.

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.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.