Why does crisis often lead to cooperation among the different levels of government?

Crisis can lead to cooperation with different levels of government to put an end to the crisis. Whether it is a food crisis, poverty crisis, or disease crisis, government have to work together to put an end to it.

Thy work together to fix a common cause or something very major/deadly.

Example: State floods, Rescues etc.

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years

in which two ways were the northeast woodland indians and the southeast indians similar? both collaborated to form the iroquois confederacy. both cultivated the crops of corn, beans, and squash. both lived in rich environments of swamps and rivers. both lived in tree-bark dwellings called wigwams. both expected men to hunt, while women farmed.