The best explanation for the expansion of voting rights to all white males regardless of land or property ownership is:
D. Andrew Jackson and the Democratic Party rose to power with the intention of creating a truer democracy.
Andrew Jackson and his supporters advocated for greater democracy and sought to expand voting rights as part of their political platform. This movement was aimed at reducing the influence of the elite and increasing political participation among the common white male population, which ultimately led to the elimination of property requirements for voting in many states.