21st century and 20th century has changed completely over electronics.
Explanation:
In the 20th century phone and T.Vs were beginning to be more popular. They were also upgrading the technology. The first touchscreen phone came out in 1992 which made technology popular. The world we live in today revolves around technology, phones, and T.V's.
Because the railroads were built along the continent of North and South America, Mexico was able to be accessible to trade for most trade areas in the continents
