Technically France wasn’t founded by separatism but instead by state collapse via the dissolution of the carolingian empire

The last I checked, the USA didn’t come into existence from suicide bombings at busses and restaurants, and massacres of civilians at music festivals.

According to Wikipedia,

The IRA’s offensive campaign mainly targeted the British Army (including the UDR) and the RUC, with British soldiers being the IRA’s preferred target.[15][236] Other targets included British government officials, politicians, establishment and judicial figures, and senior British Army and police officers.[237][238] The bombing campaign principally targeted political, economic and military targets, and was described by counter-terrorism expert Andy Oppenheimer as “the biggest terrorist bombing campaign in history”.[239] Economic targets included shops, restaurants, hotels, railway stations and other public buildings.[229] The IRA was blamed for the Abercorn Restaurant bombing in March 1972, when a bomb exploded without warning killing two women and injuring many people.[n 23][240] Due to negative publicity after the Abercorn bombing, the IRA introduced a system of telephoned coded warnings to try and avoid civilian casualties while still causing the intended damage to properties and the economy.[n 24][245] Civilian deaths were counter-productive to the IRA, as they provided the British with propaganda coups and affected recruitment and funding.[246] Despite this IRA bombs continued to kill civilians, generally due to IRA mistakes and incompetence or errors in communication.

Hamas, though, has deliberately targeted civilians for decades. Their goal hasn’t been economic damage but as many Israeli deaths as possible.