Sovereign nations around the world have taken steps to end illegal mass immigration, most notably the relatively small countries of Australia, Bulgaria, and Slovenia — all of which have enacted strict border controls.

Bulgaria 

With a population of just more than seven million residents, Bulgaria shares a border with multiple countries, including Turkey. As Europe’s migrant crisis continues — where nearly 13 percent of all German residents are now foreign-born — Bulgaria has chosen the path of sovereignty rather than open borders. Nearly 90 percent of Bulgarians say their culture is superior to foreign cultures.

Bulgarian National Movement (VMRO) populist leader Krassimir Karakachanov recently credited the construction of a border wall and fencing along the Bulgarian-Turkey border for the “almost zero migrant pressure on the border and very few people” in the country’s migration centers.

In 2016, Turkish President Erdogan threatened to release up to three million Middle Eastern and African migrants into Europe, prompting Bulgaria to take immediate action. The country built a wall at their border with Turkey, a barrier that features a tall chain link fence covered with razor wire, making it nearly impossible to cross.

Bulgaria’s border wall cut illegal immigration to the country by more than 90 percent between 2016 and 2018. Last year, only about 1,800 illegal aliens were caught at Bulgaria’s borders. Compare that to the nearly 19,000 illegal aliens who tried entering the country just two years before. Since its full construction of a border wall, illegal immigration has dropped every year.

Border policemen stand guard next to a barbed wire wall on the Bulgarian border with Turkey, near the village of Golyam Dervent on July 17, 2014. (DIMITAR DILKOFF/AFP/Getty Images)

Bulgarian border policeman patrols next to a barbed wire wall fence erected on the Bulgaria-Turkey border near the town of Lesovo on February 21, 2017. (NIKOLAY DOYCHINOV/AFP/Getty Images)

Workers fix the barbed wire wall fence on the Bulgaria-Turkey border near the town of Lesovo on February 21, 2017. (NIKOLAY DOYCHINOV/AFP/Getty Images)

A Turkey’s border police personnel stands on a watchtower overlooking a barbed wire wall fence erected on the Bulgaria-Turkey border near the town of Lesovo, on September 14, 2016. (NIKOLAY DOYCHINOV/AFP/Getty Images)

Bulgarian border police personnel stand next to a barbed wire fence at the border between Bulgaria and Turkey near the Bulgarian town of Malko Tarnovo on May 22, 2016. (NIKOLAY DOYCHINOV/AFP/Getty Images)

Workers fix the barbed wire wall fence on the Bulgaria-Turkey border near the town of Lesovo on February 21, 2017. (NIKOLAY DOYCHINOV/AFP/Getty Images)

A border policeman stands next to a barbed wire wall on the Bulgarian border with Turkey, near the village of Golyam Dervent on July 17, 2014. (DIMITAR DILKOFF/AFP/Getty Images)

A border policeman stands next to a barbed wire wall on the Bulgarian border with Turkey, near the village of Golyam Dervent on July 17, 2014. (DIMITAR DILKOFF/AFP/Getty Images)

Bulgarian border police patrol next to a barbed wire wall fence erected on the Bulgaria-Turkey border near the town of Lesovo on February 21, 2017. (NIKOLAY DOYCHINOV/AFP/Getty Images)

Australia 

Despite having a natural border barrier, the Indian Ocean, to protect against illegal mass immigration, Australia has made a conscious effort to create a border wall of patrolmen that effectively stops boats of illegal aliens.

Since the creation of Australia’s “Operation Sovereign Borders” where border patrol forces guard the country’s surrounding seas, about 3,300 so-called “asylum seekers” have been stopped and turned around. Since 2013, the Australian border forces have busted about 80 human-smuggling operations

Additionally, Australia is currently the only country in the world that mandates the strict detention of illegal aliens who are caught after they evade border forces. Illegal aliens found in Australia without valid documentation are locked up on offshore detention facilities.

In a recent address to the Australian people and future illegal aliens, Commander of Operation Sovereign Borders Major General Craig Furini warned that the country’s strict immigration enforcement will continue.

“Under my command, Australia’s borders will stay closed to illegal migration,” Furini said. “If you attempt an illegal boat journey to Australia, you will be stopped and returned to your country of departure or your home country.”

“Australia’s borders are monitored, patrolled, and protected every day of the year and our border protection defenses are stronger than ever,” Furini continued.

(Operation Sovereign Borders)

Slovenia

The small nation of Slovenia is home to some of the most beautiful countrysides in the world and the native country of First Lady Melania Trump.

When illegal aliens began breaking through Europe’s borders, it was only a matter of time that Slovenia, with a population of less than three million, would take action to secure its sovereignty. In 2015, at the height of the continent’s migrant crisis, Slovenia deployed army guards to the border as thousands entered the country in a matter of days.

During the height of the migrant crisis, about half a million illegal aliens crossed through Slovenia in attempts to resettle in other European nations. In response, Slovenia built a fortified border fence, lined with barbed wire to stop the illegal immigration.

Most recently, Slovenia approved more measures to further seal its borders, giving border patrol the ability to directly turned away asylum seekers arriving from Croatia should illegal immigration levels rise that “threaten public order and internal security” and arms agents.

Last year, Slovenia’s Interior Minister Vesna Gjerkes-Znidar announced that the walls and fences protecting the country’s border would not be going anywhere.

Gjerkes-Znidar said taking the border fence down “would serve as a signal that the border is open, which is unacceptable, and would certainly cause massive pressures on [our] border.”

A picture taken near the village of Gibina, Slovenia, on February 17, 2017 shows a panel fence set up along the Slovenian-Croatian border. (JURE MAKOVEC/AFP/Getty Images)

A barbed wire fence is set up along the Slovenian-Croatian border in Rakovec, in Slovenia on February 16, 2017.
(JURE MAKOVEC/AFP/Getty Images)

A picture taken near the village of Gibina, Slovenia, on February 17, 2017 shows a panel fence set up along the Slovenian-Croatian border. (JURE MAKOVEC/AFP/Getty Images)

A panel fence is seen closing up to a house near the Slovenian-Croatian border in Prelesje, Slovenia on April 10, 2016. (JURE MAKOVEC/AFP/AFP/Getty Images)

A border fence is set up along the river near the Slovenian-Croatian border close to the Slovenian village Podklanec, on February 8, 2017. (JURE MAKOVEC/AFP/Getty Images)

A picture taken near the village of Gibina, Slovenia, on February 17, 2017 shows a panel fence set up along the Slovenian-Croatian border. (JURE MAKOVEC/AFP/Getty Images)

A barbed wire fence is set up along the Slovenian-Croatian border in Rakovec, in Slovenia, on February 16, 2017.
(JURE MAKOVEC/AFP/Getty Images)

A picture taken near the village of Gibina, Slovenia, on February 17, 2017 shows a panel fence set up along the Slovenian-Croatian border. (JURE MAKOVEC/AFP/Getty Images)

A barbed wire fence is seen at the Slovenian-Croatian border, near the village of Veliki Obrez, in Slovenia on February 16, 2017. (JURE MAKOVEC/AFP/Getty Images)

Barbwire fence is seen on the field near the Slovenian-Croatian border in Rakovec, Slovenia on April 9, 2016. (JURE MAKOVEC/AFP/AFP/Getty Images)

John Binder is a reporter for Breitbart News. Follow him on Twitter at @JxhnBinder.