Question

what circumstances made the Louis 16 increase the taxes

Answer 1

Long & Continuous Wars With Neighbour Countries Drained At least 1 Billion Livres (Currency Before 1789).They Even Helped America To Gain Independence From Common Ememy - England. It Emptied France's Treasury & To Maintain His Court & Empire Louis XVI Had To Increase Taxes.

Answer 2

France fought many wars and even lost to England so debt was imposed on France as it fought on taxes. This condition worsened when
France under Louis XVI helped American people in their revolution against England. This
emptied the treasury of Louis XVI. Then to fill his treasury imposed taxes on third estate.