
\documentclass[12pt,oneside,a4paper]{article}

\usepackage[british]{babel}
\usepackage{graphicx}
\usepackage{hyperref}		% here intended for internal linking on figures (or tables)
\usepackage[left=2.5cm, right=2cm, bottom=2cm, top=2cm]{geometry}	% CAUTION: optional override of document class for custom margin sizes


\begin{document}

	\begin{center}
	
	    \begin{figure}
	        \includegraphics[width=15cm]{images/image-tri-trade-16th}
	        \caption{Historical overseas trade}
	        \label{img:atlantic-trade}
	    \end{figure}

	    Figure~\ref{img:atlantic-trade} illustrates the transatlantic trade
	    in the 16th century.				\\
	    Source: 
	    \url{https://en.wikipedia.org/wiki/File:Detailed\_Triangle\_Trade.jpg}


		\vskip 3em
		

	    \begin{figure}[]	% use [h!] to enforce placement above the description
	        \includegraphics[width=15cm]{images/image-spain-orreaga}
	        \caption{Historical overseas trade}
	        \label{spain-orreaga-map}
	    \end{figure}

	    The ancient map in figure~\ref{spain-orreaga-map} shows the central area of Nothern Spain.				\\
	    \href{https://commons.wikimedia.org/wiki/File:Orreaga\_-\_old\_map.jpg} {
	    	Source: commons.wikimedia.org/wiki/File:Orreaga\_-\_old\_map.jpg
	    }




	\end{center}
	

\end{document}
