Hey There,
False, the United States and Canada, as modern nations, do not experience social stratification. United States categorizes individuals based on their economic status by classes (Upper, Middle, and Lower) the most wealthiest Americans are in the Upper class while decent earning Americans are in the Middle class, the lower class represents Americans that are not financially prosperous and experience many troubles in the financial aspect of their lives (Bills, necessities, schooling, etc.) usually Americans associated in this class have troubles with providing for their family.
Studies show that Americans which are in the Lower class have a low literary rate. Due to lack of education, individuals have a hard time finding a decent job which as a result causes them to work for low pay which essentially is not enough for these type of individuals to provide for their families.
In conclusion, the most wealthiest are classified as the upper-class the middle earning are classified as middle-class and the lowest earning are classified as the lower- class. Therefore, the United States does experience social stratification.
Hope this helped!