Immigrants to a country should be forced to learn that country's language.Do you agree or disagree with this statement?

Sentence: Therefore, when people do migrate to other countries,I think it should be a compulasary for them to learn that country's language for many reasons.
Error: compulasary Suggestion: compulsory

Sentence: First of all, This would deffinitly help them to overcome many of the obstacles they may confront throughout their life in other countries.
Error: deffinitly Suggestion: definitely

Sentence: My friend once told me a story about a foreigner man,who lost his son in a grocerry shopping.
Error: grocerry Suggestion: grocery

Sentence: The father,meanwhile, was histerically running here and there trying to find his son until one of the customers noticed his peculiar behaviour, and eventually led him to the security where he found his son again.
Error: histerically Suggestion: historically

flaws:
No. of Spelling Errors: 4 2

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Attribute Value Ideal
Score: 27 in 30
Category: Excellent Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 4 2
No. of Sentences: 15 15
No. of Words: 319 350
No. of Characters: 1639 1500
No. of Different Words: 181 200
Fourth Root of Number of Words: 4.226 4.7
Average Word Length: 5.138 4.6
Word Length SD: 2.825 2.4
No. of Words greater than 5 chars: 115 100
No. of Words greater than 6 chars: 98 80
No. of Words greater than 7 chars: 76 40
No. of Words greater than 8 chars: 52 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 21.267 21.0
Sentence Length SD: 10.116 7.5
Use of Discourse Markers (%): 0.667 0.12
Sentence-Text Coherence: 0.325 0.35
Sentence-Para Coherence: 0.57 0.50
Sentence-Sentence Coherence: 0.117 0.07
Number of Paragraphs: 5 5

Hi
Dear Rasha,
I really enjoyed your essay!
It is really well-structured, fluent, and greatly makes sense.
Hope you success :)