<h2>Manuel José Arce
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The leader in the movement against Mexican rule was Colonel Manuel José Arce of El Salvador. His flag of blue-white-blue horizontal stripes was given a blessing in the church of San Salvador on February 20, 1822, and eventually became the national flag of the United Provinces of Central America.
Answer:
Then in the 1800s major changes came our way. The telephone and radio were invented. ... To the people living in that day and age it could be said that radio, telephone, letters and telegraphs were their social media platforms. It was the way they were able to communicate with their public.
Explanation:
This sentence technically doesn't contain an error in verb-noun agreement, however the noun "each one" is odd here. It should be "everyone"