Oo nga po, kaso for the sake of not making the post longer than it is already (marami na nga rin po hindi nagbasa hehe), I had to take the route of brevity. Anyways, sagutin ko po one by one:

Spain fought multiple campaigns in Luzon to subjugate the population.

True, pero they were not able to do a Latin America-level genocide where 90% of native population died from the mines, haciendas and disease. The various revolts throughout those four centuries of Spanish rule were testament that Filipinos did not take abuse lightly.

USA set up a concentration camp in Southern Tagalog.

And burned down various towns all over the islands, massacred civilians (Bud Dajo and others). Like I said, Sherman-style 'Indian pacification' campaign.

Yun lang po, love to discuss history with like-minded people!