What was the outcome of most European revolts of the 1830s?

They resulted in little to no change.

Explanation:

The revolutions in 1830 shook many places in Europe. The places such as France, Germany, Belgium, etc were in great flux. The revolutions that broke in Europe in 1830 were Romanticism, the Belgian Revolution, and the July Revolution.

These revolutions were considered as the lengthy continent-wide crisis. The origin of these revolts lie in the governmental mistakes. But these revolutions were unable to bring a satisfactory outcomes as hoped for because of lack of preparations by the revolutionaries. And also, these revolutions did not get any international help. So, the European revolutions of 1830 resulted in only little or no changes.

what the first or next guys says

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.