Why did the "successes" of the Age of Jackson begin to fail after he left office with his successors, Van Buren and Tyler?

Because successors did not have the same egalitarian and democratic goals as Jackson.

Explanation:

Andrew Jackson developed policies that would help the most undervalued population and reduce American elitism, especially in relation to large banks and corporations. Jackson tried to extend voting rights, ending electoral college and allowing the American population to be the only one responsible for choosing their representatives, promoting programs that help farmers, promoting the rotation of public offices, preventing political elitism, preventing monopoly banking, among other very populist and democratic policies that would give more freedom and progress to American society. However, his successors did not follow these same objectives, mainly because of the political and economic pressure that the big corporations and big political names imposed, which caused the successes of the Jackson era to begin to fail.

nmms you want a whole bibliography of andrew wrong

explanation:

the california missions began in the late 18th century as an effort to convert native americans to catholicism and expand european territory. there were 21 missions in all, lasting from 1769 until about 1833.   the missions were built by the spanish starting in 1769 in order to “colonize” the territory of alta california. so the missions were important because they were the means of settling california. it also wanted to keep other european countries out of alta california. building settlements along the coast would them meet these goals. missionaries wanted to convert the indians to the roman catholic faith. california indians did much of the work to build missions.