In Ireland:
1554-1609 - the plantations (Laois/Offaly, Munster & Ulster), where native Gaelic Catholics were ethnically cleansed and replaced by Protestant settlers from Scotland and England. The plantation of Ulster was the root of the current and historic troubles in NI.
1649 - 1661 - Cromwell's invasion of Ireland, nearly half a million died of famine after a concerted campaign to kill the country's livestock (Gaelic Ireland was a pastoral society), mass dispossession of land in all counties and provinces, soldiers and clergy who served the Confederate forces (a royalist Irish entity which was essentially independent from 1641 in all but name) rounded up and exiled or deported as indentured servants to the Caribbean.
17th Century - the Gaelic lordships were gradually dispossessed, resulting in lasting damage to Gaelic culture. Much like other medieval aristocracy they supported the cultural elite of Gaelic Ireland, the poets, judges and academics who were shut out and whose knowledge was lost. This played a key role in the later demise of the Irish language, reducing its prestige and rendering it vulnerable to demographic shock among its key speakers, the poorest farmers and landless labourers of the western seaboard.
1688-1691 - the Williamite Wars of British succession fought in Ireland, Irish Catholics sided with James, when the war was lost after the battle of Aughrim they were promised religious freedoms under the Treaty of Limerick. These were reneged upon and Catholics were denied all civil rights, forced to pay tithes to the established Church of Ireland and if they owned land it had to be divided equally between all sons on death, which had the effect of reducing much of the population to paupership and beginning the country's dietary dependence upon potatoes, the only crop that could provide a suitable return on the small holdings that were the norm for Catholics.
1740-1741 Year of the Slaughter, 38% of the Irish population die in a severe famine, grain exports continue to Britain despite the mass casualties.
1798 An alliance of Irish Catholics and Presbyterians supported by Napoleons forces rise in rebellion against British rule. The rebellion is crushed, with upwards of 100,000 killed in a frenzy of retribution by Crown forces. The devolved parliament is bribed and coerced into voting for the Act of Union between Britain and Ireland, making the country officially part of the UK.
1845-1851 An Gorta Mór, the great famine. Approx. 2 million die of starvation and a further 2 million emigrate. Despite the starvation cattle and grain continue to be exported from Ireland, with the military engaged to provide escort for the food wagons and herds as they're take to the docks. Massive cultural damage is caused on top of the human tragedy, the vast majority of the affected are Irish speakers from Western seaboard counties, their numbers suffer a precipitous collapse and the language begins its death spiral.
1886 In a bid to secure political points at the expense of the Liberal Party, Randolph Churchill (Winstons father) cultivates sectarian and Unionist votes in Ulster. This leads to the revival of the Orange Order.
1911-1914 Irish voters hold the balance of power in Westminster through their Home Rule Party, who agitate for a form of devolution. The House of Lords blocks passage of a Home Rule bill by the Commons for three years, while the Conservative party support the UVF, an illegal militia, to rearm and threaten military action against any Home Rule government. The British military in Ireland refuses to take action against the importation of arms by the UVF, threatening to remain in barracks if ordered to disarm them. Irish nationalists form the Irish Volunteers in response to the UVF, their small time efforts to import arms are met with the full force of the law, with civilians shot dead by troops in Dublin frustrated at their inability to intercept a shipment.
1916 At Easter 1916, a small group of nationalists launch a rebellion in Dublin, proclaiming the Irish Republic and occupying the city centre. Rising was crushed and the leaders were executed. This lead to a groundswell of sympathy and support for Sinn Fein, who weren't involved in planning the Rising but were it's primary beneficiaries.
1919-1921 Despite a 75% vote for independence from the UK, Irish MPs for Sinn Fein are rounded up and gaoled ones the Defence Of the Realm Act. Irish republicans engage in guerrilla warfare against Crown forces, with atrocities committed against civilians by the Black & Tans, a British auxiliary police force. In Ulster the UVF is armed and dragooned into action against the Catholic community, killing hundreds and expelling tens of thousands from the province. After Bloody Sunday the British government realise Ireland is becoming ungovernable and declare a truce with the leadership of the IRA, leading to a peace treaty. Partition is enshrined in this Treaty, leading to a civil war in Ireland between pro and anti Treaty forces.
A long sorry history and that's before we even talk about the current issues with Brexit or the Troubles. Cultural genocide and slaughter without being over dramatic.
If you want to see a clolonai society which never moved on take a look at the Northern Ireland protestants. Mass denial of the realities of time marching forward