Simplify the following text for a Grade 11 native English-speaking person.
Original: Founded in 1825 as the Kyrgyz-Khokand fortress of `` Bishkek '' , then , in 1862 , named as the Russian fortress Pishpek ( Ð Ñ Ð Ð Ð 3\/4 Ñ Ñ Ñ Ð Ð Ñ Ð Ð Ð ) , in 1926 the city was renamed Frunze ( Ð Ñ Ñ Ð 1\/2 Ð Ð ) , after the Bolshevik military leader Mikhail Frunze .
Simplified: Originally founded in 1878 as the Russian fortress of Pishpek ( Ð Ð Ñ Ð Ð Ð ) , between 1926 and 1991 it was known as Frunze ( Ð Ñ Ñ Ð 1\/2 Ð Ð ) , after the Bolshevik military leader Mikhail Frunze .