The best explanation for the expansion of voting rights to all white males regardless of land or property ownership is:
B. Andrew Jackson and the Democratic Party rose to power with the intention of creating a truer democracy.
Andrew Jackson and his supporters advocated for broader democratic participation, arguing that the government should be more representative of the common man. This led to reforms that expanded voting rights to all white males, regardless of property ownership, as part of a shift towards a more inclusive democratic process.