What happened during the time period between the mauryan Empire and the Gupta Empire?

Between the Mauryan Empire (circa 322-185 BCE) and the Gupta Empire (circa 320-550 CE), India experienced a period known as the "Post-Mauryan" era, characterized by regional fragmentation and the rise of various smaller kingdoms. This time saw the emergence of dynasties such as the Shunga, Kanva, and Indo-Greek rulers, alongside the spread of Buddhism and the development of trade routes. The socio-political landscape was marked by cultural and religious diversity, setting the stage for the later consolidation and cultural flourishing of the Gupta Empire.