what changes are happening to people's lives and perspectives, what are the trends of government policies and why they are happening
maybe "the changes occurring within the lives and perspectives of citizens, the trends of governmental policies". just to make it a bit clearer
Economics gives me a tool to better do so
"economics would provide me with tools to foster an improved understanding of the advertising world."
will help me appreciate economics better and serve me well as I venture in the advertising world.
"will help me better appreciate economics as I venture into the advertising world."
Sounds great overall though, I enjoy your writing! Good luck!