Prime Minister Mark Carney has taken his unity message to Alberta ahead of Monday’s referendum, urging people to vote for the province to remain in Canada and reject Premier Danielle Smith’s other nine ballot proposals.

In prepared remarks ahead of a speech in Calgary on Thursday evening, Mr. Carney spoke of the country’s strength when united and warned Albertans of the consequences of voting against choosing to keep the province wedded to Confederation.

“At this pivotal moment, Albertans have a choice: to build a stronger Alberta and a greater Canada to leave for our children, or to burden them with years of deep division and great uncertainty,” Mr. Carney was set to tell a packed house at a downtown Calgary rally.

Monday’s referendum will ask voters to weigh in on 10 questions, one of them on whether Alberta should remain in Canada or hold a second, binding vote on separating. The other nine questions, authored by Ms. Smith’s government, deal with limiting some non-permanent residents’ access to social services, charging them fees for health care and education, and numerous constitutional changes such as abolishing the federal Senate.

The Prime Minister has been critical of Ms. Smith’s decision to call the referendum. In May, he described it as a “dangerous bluff,” likening it to Britain’s 2016 vote to leave the European Union. (Mr. Carney was governor of the Bank of England at the time.)