Complex sentence: It was founded in 1752 as a Russsian fort etending Russian settlement and influence into the the nomadic Kazakh territories to the south.Petropavl (at the time known as Kyzldzhar) was an important trading center for silk and carpets until the Russian Revolution of 1917.
Split into simpler sentences: It was founded in 1752 as a Russian fort etending Russian settlement and influence into the the nomadic Kazakh territories to the south. Petropavl was an important trading center for silk and carpets until the Russian Revolution of 1917.