What are three political countries that have had political revolutions in the past three years?

In the past three years, notable political revolutions have occurred in Belarus, where widespread protests erupted in 2020 against President Alexander Lukashenko's contested election, leading to a crackdown on dissent. Sudan experienced significant upheaval in 2021 as protests against military rule resulted in the ousting of Prime Minister Abdalla Hamdok. Additionally, in Iran, ongoing protests since 2022 sparked by the death of Mahsa Amini have challenged the government's authority and called for significant political change.