evidence: 12th Century - Serbia gains control of Kosovo, which goes on to become the heart of the Serbian empire. The period sees the building of many Serbian Orthodox churches and monasteries. [...] 1990 - Yugoslav President Slobodan Milosevic strips Kosovo of its autonomy and imposes Serbian administration on the territory, prompting Albanian protests. [...] 2013 - Kosovo and Serbia reach a landmark agreement on normalising relations that grants a high degree of autonomy to Serb-majority areas in northern, while both sides agree not to block each other's efforts to seek EU membership.