When and why did the political parties start?

Politicaj parties began to form during the struggle over ratification of the federal Constitution of 1787. Friction between them increased as attention shifted from the creation of a new federal government to the question of how powerful that federal government would be.

Explanation:

A political party is an organization that coordinates candidates to compete in a country's elections. It is common for the members of a political party to have similar ideas about politics, and parties may promote specific ideological or policy goals.

companies sell stock to their businesses grow and become "public"

the answer is 250 percent.