\documentclass{article}
\usepackage{graphicx}

\begin{document}
This is a test document with multiple sections included from different
directories.

% Section 1
\input{section_1/text}
% Section 2
\input{section_2/text}
%A Figure
\begin{figure}[htb]
	\centering
	\includegraphics[width=0.5\textwidth]{figures/peppers}
	\caption{Peppers from USC SIPI database.}
\end{figure}

\end{document}
