 The Ottomans also suffered defeats in battles such as the Battle of Sisak.The Ottomans had been at peace with the neighbouring rivaling Safavid Empire since 1555, per the Treaty of Amasya, that for some time had settled border disputes.But in 1577 Murad declared war, starting the Ottoman–Safavid War (1578–90), seeking to take advantage of the chaos in the Safavid court after the death of Shah Tahmasp I. Murad also tried to explore North America and make the ideas of colonizing America be more possible.