 Nyorai mberi kweiyi ndima - Vamwe vezvenhau vokuRussia, kubatanidza Mikhail Tikhomirov, vanodavira kuti Zadonshchina yakanyorwa pakati pa 1383 na 1393. Mamwe manyoro anotaura kuti makore 160 akanga apfuura kubvira paHondo yeRwizi rweKalka, chakaitika muna 1223. Panguva imwe cheteyo, pane kududzwa kweguta reBulgaria reTyrnov nhasi Veliko Tarnovo, iro muna 1393 rakatorwa navaTurkey uye harina kukwanisa kududzwa seOrthodox kutozosvikira muzana ramakore rechi 19. 