Possibly the telegraph. Morse code came into place with that. People could communicate with ticks.
I just did this and got a 90% I'm pretty sure its B
My respond to this question is yes
Hernan Cortes is the explorer not correctly matched with his region. He did not explore western South America, but instead explored Mexico. He fought in Mexico and led the downfall of the Aztec Empire. For this, he received a high-ranking medal and this helped him move up as a noble of a better level in the social ranking. He also used the tactics of being friends with some indigenous groups versus others. He brought large parts of Mexico under the Spanish Castille rule.
The national government got stronger thanks to the Articles of Confederation being replaced with the US Constitution. The Articles of Confederation was America's first constitution. This constitution lasted roughly a decade, as it was extremely ineffective and gave the federal government very little power. For example, the federal government could not collect taxes or force states to follow national laws.
When the US Constitution was passed, the federal government gained significant power. This included the creation of an executive branch, the idea that federal laws trump state laws, and the ability to raise funds in order to create a national military.