In what ways did Andrew Jackson support slavery?I know he was a slaveholder, but how did he "openly" campaign for slavery? Like how did he favor...

During the time that Andrew Jackson was president, slavery
was not really a very big issue in American politics.  The Missouri Compromise had
already happened and the war with Mexico had not yet happened.  This meant that the
issue of slavery was pretty much settled during Jackson's time in office.  At least
partly because of this, Jackson did not really do anything to promote
slavery.

This does not mean that Jackson was opposed to
slavery.  It simply means that slavery was not an issue and so he did not have to go
around campaigning for it anymore than a modern president has to go around campaigning
fo people's right to eat meat.

The one thing that sometimes
connects Jackson and slavery is the "gag rule" that was imposed by Democrats in Congress
at the end of Jackson's time in office.  It prohibited the House of Representatives from
considering any petitions having to do with slavery.  However, since he was President,
Jackson was not personally involved in this issue.