Complex sentence: Though ALGOL implemented some novel concepts, such as recursive calling of functions, the next version of the language, ALGOL 68, became bloated and difficult to use, which lead to the adoption of smaller and more compact languages, such as Pascal.
Split into simpler sentences: Though ALGOL implemented some novel concepts, such as recursive calling of functions, the next version of the language, ALGOL 68, became bloated and difficult to use. Which lead to the adoption of smaller and more compact languages, such as Pascal.