Complex sentence: During the 1850s and 1860s the firm generated many overseas sales to countries such as Turkey, India and Russia, and for items as diverse as gunpowder mills, boilers, presses, and steam engines for use in a wide variety of applications.
Split into simpler sentences: During the 1850s and 1860s the firm generated many overseas sales. These were to countries such as Turkey, India and Russia, and for items as diverse as gunpowder mills, boilers, presses, and steam engines for use in a wide variety of applications.