Define "bipartisanship." why do you think that is hard to achieve?

Explanation:

Bipartisanship, sometimes referred to as nonpartisanship, is a political situation, usually in the context of a two-party system (especially those of the United States and some other western countries), in which opposing political parties find common ground through compromise. Partisanship is the antonym, where an individual or political party adhere only to its interests without compromise.

from the conditions of the working class in england by friedrich engels,the main idea is :

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)